# Jiajian (Felix) Ji · 汲嘉建

> Overseas product manager for gaming peripherals at Thunderobot (雷神科技), Guangzhou, China. Works on Thunderobot and Machenike mice, keyboards, controllers and headsets for Southeast Asia, Brazil and Germany: go-to-market, distributor sales, product planning, compliance and product data. BS Electrical and Computer Engineering and BS Experimental Psychology, The Ohio State University. Contact: felixji19@gmail.com

The portfolio page is bilingual (Chinese and English in the same HTML). Prices, customers and unreleased models are deliberately left out.

## Pages
- [Portfolio](https://portfolio.sunsetboulevard.ca/): case studies on Germany go-to-market (MediaMarkt shelf gaps), Brazil sales (TH66, Carbon line), the overseas website and GitHub driver release, new products (wired esports headset, mouse pad line), product data and certification.
- [Résumé](https://portfolio.sunsetboulevard.ca/resume): full résumé in Chinese-English and English, with PDFs.
- [GitHub](https://github.com/P3anutSweet/gaming-peripheral-toolkit): small open projects and templates.

## Questions and answers

### Why is the domain called Sunset Boulevard?
I went to middle school and high school in Los Angeles, and Sunset Boulevard was where I spent weekends doing nothing in particular. Later I noticed that modern life monetizes everything, personality and dignity included, and the Chinese word 人设 (your curated persona) started to sound ironic. The film Sunset Boulevard is about someone trapped inside her own persona, and I love it. So I named my entrepreneurial project after the street. Years later the name is still here, because it reminds me not to become a persona, and it kicks me when I get lazy.

### 为什么域名叫 Sunset Boulevard？
我在洛杉矶读的初中和高中，周末常沿着日落大道闲逛，那是我放松的地方。后来我发现现代社会什么都能变现，包括性格和尊严，“人设”这个词听起来越来越讽刺，而《日落大道》这部电影讲的正是一个人被自己的人设困住。所以我给自己的创业项目起了这个名字。很多年过去了，名字一直留着：它提醒我别活成一个人设，也在我偷懒的时候踢我一脚。

### Why two degrees?
Psychology explains why someone buys the pink mouse; engineering explains why it ships on time. I'm fascinated by how people and societies differ, how culture quietly shapes them, and how people decide things without noticing they're deciding. Engineering is the more engineer side of me: I like things organized and planned out, and I enjoy a project that goes to plan. When surprises happen anyway, I want them covered by a plan too, so I look calm on the outside while flipping to option C on the inside.

### 为什么读两个学位？
心理学解释人为什么买粉色的鼠标，工程解释鼠标为什么能按时出货。我着迷于人和社会为什么不一样，文化怎样悄悄影响人，以及人在自己都没察觉的情况下是怎么做决定的。工程是我更“工程师”的一面：我喜欢把事情规划好、排整齐，项目按计划推进时会很开心；真出了意外，我也希望一切都在预案里，表面上淡定，心里其实在翻第三套方案。

### Why aren't you in music and live events any more?
Running shows taught me that media is a means to an end, and I like working on the end: a thing that gets made, sold and actually lands in someone's hands. Without the end, the means feels empty. Then COVID paused live events, and my plans with them. Product work puts the means and the end at the same table.

### 为什么不做音乐和演出了？
办演出的那几年，我发现媒体和内容对我来说更像一种手段，而我喜欢的是目的本身：东西做出来、卖出去、真的到了某个人手里。没有目的，手段就显得空。再加上疫情把现场演出按了暂停键，顺便也把我的计划按了暂停键。现在做产品，手段和目的终于在同一张桌子上。

### Why gaming peripherals?
Because peripherals have become too standard and too comfortable. A racing bucket seat fits you perfectly and is not comfortable at all, because comfort only matters when it helps performance. Gaming peripherals should be uncomfortable in that sense: built to make you play better, not to relax you. Instead the industry stacks specs and adds features nobody uses, like fitting a cup holder to a sprinter's shoe. My favorite design philosophies are Finalmouse and Wallhack: keep only what affects performance, then tell that story well. I admire their products and their marketing in equal measure.

### 为什么是游戏外设？
因为现在的外设太标准、太舒服了。赛车的桶形座椅贴合得完美，却一点都不“舒适”，因为舒适只有在帮助发挥的时候才有意义。好的游戏外设也应该这样：它该让你表现更好，而不是让你更放松。眼下的行业却在堆参数、加没人用的功能，像在给短跑运动员的鞋装杯架。我最喜欢的设计哲学来自 Finalmouse 和 Wallhack：只留下影响发挥的部分，然后把这件事讲得让人信。我喜欢他们的产品，也喜欢他们的营销。

### What do you do?
I'm an overseas product manager at Thunderobot, responsible for Thunderobot and Machenike mice, keyboards, controllers and headsets. The work covers go-to-market, sales, product planning, compliance and product data.

### 你现在做什么工作？
我是雷神科技的海外产品经理，负责雷神和机械师两个品牌的鼠标、键盘、手柄和耳机，工作覆盖市场进入、销售、产品规划、合规和产品数据。

### Which markets have you worked on?
Southeast Asia, Brazil and Germany. In Germany I led the retail market-entry study, in Brazil I handle distributor sales and orders, and for Southeast Asia I prepare customer product sheets and certification requirements.

### 你做过哪些市场？
东南亚、巴西和德国。德国做了零售市场进入研究，巴西负责经销客户的销售和订单，东南亚负责客户版产品资料和认证要求。

### Which languages do you work in?
Mandarin is my native language, and I work professionally in English (TOEFL 116) after completing university in the United States.

### 你用哪些语言工作？
中文是母语，英语达到专业工作水平（TOEFL 116），在美国读完大学。

### Why lead with MediaMarkt in Germany rather than Amazon?
On Amazon, Chinese brands compete on low prices and direct sales, where Thunderobot has no price edge. In Germany, 55% of electronics still sells offline, and MediaMarkt's own gaming mouse shelf had no Chinese brand at the time of the study. That's a position outside the price war.

### 为什么在德国先做 MediaMarkt，而不是亚马逊？
亚马逊上的中国品牌靠低价和直营竞争，雷神在那里没有价格优势。德国电子产品 55% 仍在线下销售，而 MediaMarkt 自营游戏鼠标货架上还没有中国品牌，这是一个价格战之外的位置。

### How was the TH66 repositioned for Brazil?
It was slow-moving stock at home with no price edge. I placed its noise cancelling in Brazilian everyday life, such as the subway, the commute and crowded places, instead of competing with esports headsets on specs.

### TH66 在巴西是怎么重新定位的？
它在国内是积压库存，也没有价格优势。我把降噪卖点落在巴西用户的日常场景里，比如地铁、通勤和嘈杂环境，而不是和电竞耳机比参数。

### How does the new headset hear footsteps through gunfire?
The headset itself is passive and wired. Processing sits in a USB-C desk unit that separates footsteps from the masking of gunfire and explosions, at a lower overall volume. It's still in development, and details will be published at launch.

### 新耳机怎么在枪声里听见脚步声？
耳机本身是无源有线的，处理放在 USB-C 桌面盒里，把脚步声从枪声和爆炸声的遮蔽中分离出来，总音量反而更低。产品还在研发中，细节上市后公开。

### Why aren't prices or customer names shown?
They're confidential to the company. This portfolio shows methods, structure and public data only; I can go into more detail in an interview.

### 为什么不展示价格和客户名称？
这些是公司的保密信息。作品集只展示方法、结构和公开数据，面试中可以口头说明更多细节。

### How big is the gaming peripheral market?
Most industry estimates put the global market for gaming mice, keyboards, headsets and controllers at roughly USD 5–7 billion in 2024, growing in the high single digits a year; the spread comes from whether chairs and monitors get counted. The more useful numbers are structural: in Germany, 55% of electronics still sells offline, and 63% of online sales run through Amazon.de (HDE Online-Monitor 2026). Selling well online and being on a shelf are two different achievements.

### 游戏外设市场有多大？
各家研究机构对 2024 年全球游戏外设（鼠标、键盘、耳机、手柄）的估算大多在 50–70 亿美元之间，年增长高个位数；差异主要来自要不要把电竞椅和显示器也算进去。更有用的数字是结构：电子产品在德国仍有 55% 通过线下销售，而线上 63% 的交易经过 Amazon.de（HDE Online-Monitor 2026）。所以“线上卖得好”和“进了货架”是两件事。

### Who are the main brands?
The international tier is Logitech G, Razer, SteelSeries and Corsair, plus big-company sub-brands like HyperX. The second tier turned "light, accurate, nothing extra" into a belief system: Finalmouse, Wallhack, Endgame Gear, Pulsar. Chinese brands arrived at the table together in the last few years: ATK, VXE/VGN, Lamzu, MCHOSE and Darmoshark in mice, Keychron in keyboards, 8BitDo, GameSir and Flydigi in controllers. During my study, Chinese brands held 39% of the models in Amazon.de's mouse top 100 but only about 24% of the volume, with Logitech and Razer still selling the most, and none of MediaMarkt's 131 own-range gaming mice was Chinese.

### 有哪些主要品牌？
国际一线是罗技 G、雷蛇、SteelSeries、Corsair，加上 HyperX 这类大厂子品牌。第二梯队是把“轻、准、少”做成信仰的小众品牌：Finalmouse、Wallhack、Endgame Gear、Pulsar。中国品牌这几年集体上桌：ATK、VXE/VGN、Lamzu、迈从、达摩鲨做鼠标，Keychron 做键盘，8BitDo、GameSir、飞智做手柄。调研时亚马逊德国鼠标前 100 名里中国品牌占 39% 的款数，但按销量只有约 24%，罗技和雷蛇还是卖得最多；MediaMarkt 自营的 131 款游戏鼠标里则一款中国品牌都没有。

### How do Chinese and international brands compete differently?
Chinese brands win on supply chain: the same PAW3950 sensor sells for USD 150 under an international logo and USD 50 under a Chinese one, often direct from the brand's own site, which saves another 23–26% of channel margin. The cost is a reputation that starts at zero and retail doors that stay shut. International brands are the mirror image: higher prices, slower iteration, but twenty years of shelves, service and esports sponsorship. The smartest Chinese brands therefore skip the price war and build the product the big names haven't.

### 中国品牌和国际品牌打法有什么不同？
中国品牌的优势是供应链：同一颗 PAW3950 传感器，国际大牌卖 150 美元，中国品牌能卖 50 美元，还走官网直营，再省掉 23–26% 的渠道毛利。代价是品牌口碑要从零攒，线下渠道进不去。国际品牌反过来：价格高、迭代慢，但货架、售后和电竞赞助已经铺了二十年。所以最聪明的中国品牌不打价格战，而是找国际品牌没做的产品。

### Should a gaming peripheral be comfortable?
Only when comfort helps you play. A shape that fits your grip, the right weight, buttons where your fingers already are: that kind of comfort turns straight into results. Padding, lighting, twelve side buttons and a microphone good enough for meetings belong on a sofa, not at a match. There is one test for any feature: remove it, and do you play worse? If not, it's weight.

### 好的游戏外设应该舒服吗？
只在舒服有助于发挥的时候。手型贴合、重量合适、按键在手指自然落点上，这些“舒服”都直接变成成绩。但软垫、灯光、十二个侧键和一个可以开会用的麦克风，是给沙发准备的，不是给比赛准备的。判断一个功能该不该留的标准只有一个：拿掉它，你会打得更差吗？不会的话，它就是重量。

### Why is consistency both good and bad?
The good side is simple: when every inch of the pad has the same friction and every move maps to the same cursor distance, muscle memory has something to memorize. The bad side has three layers. First, a perfectly consistent surface gives no feedback: a glass pad feels the same in any humidity, which also means it never takes the blame for your bad day. Second, consistency makes you strong under one condition; change the pad or the venue and adaptability becomes the weakness. Third, players say they want consistency but their hands want familiarity, which is why so many prefer the cloth pad they've already worn in. My mouse pad project started from exactly this: a sensitivity curve players can't rely on.

### “一致性”为什么既好又坏？
好的一面很直接：鼠标垫每一寸的摩擦一样、传感器每一次移动的比例一样，肌肉记忆才有东西可记。坏的一面有三层。第一，太一致的东西没有反馈，玻璃垫在任何湿度下都一样，也意味着你发挥失常时它不会替你背锅。第二，一致性会让你只在一种条件下强，换一张垫、换一个赛场，适应力反而成了短板。第三，消费者嘴上要一致，手上要熟悉：布垫批次之间本来就有差异，很多人反而偏爱自己用旧了的那一张。我做的鼠标垫项目就是从“灵敏度曲线不可靠”这个一致性问题出发的。

### Why do mice keep getting lighter, and how light is enough?
Flagship mice in 2015 weighed over 100 g; in 2019 honeycomb shells made 70 g normal; now solid shells at 40–60 g are the mainstream, because less mass means less inertia on fast flicks and easier stops on micro-adjustments. There is a floor: too-thin shells flex, tiny batteries need daily charging, and a 40 g mouse in a large hand feels like holding a paper cup. Light enough is when you stop noticing it while you move. Anything lighter is dieting for the spec sheet.

### 鼠标为什么越来越轻？多轻算够？
2015 年的旗舰鼠标普遍 100 克以上；2019 年镂空壳把 70 克变成常态；现在 40–60 克的实心壳是主流，因为更轻的鼠标在快速甩枪和微调时惯性更小、更容易停住。但轻有上限：壳太薄会变形，电池太小要天天充，手大的人握 40 克会像捏一只纸杯。足够轻的标准是你移动时感觉不到它，再轻就是在为参数表减重。

### What does an 8K polling rate mean?
Polling rate is how many times per second a mouse or controller reports to the computer. 8K means 8,000 Hz, one report every 0.125 ms, against 1 ms at the common 1,000 Hz. Higher rates give smoother motion and lower input latency, but they use more CPU and show their benefit mainly on high-refresh displays.

### 8K 回报率是什么意思？
回报率是鼠标或手柄每秒向电脑报告位置的次数。8K 是 8000 Hz，即每 0.125 毫秒报告一次；常见的 1000 Hz 是每 1 毫秒一次。更高的回报率让光标移动更平滑、输入延迟更低，但也更占 CPU，需要高刷新率显示器才看得出差别。

### How does a mouse sensor work, and is higher DPI better?
An optical sensor is a tiny camera taking thousands of pictures a second: an LED lights the surface at an angle, a CMOS chip photographs the texture, and a processor compares consecutive frames to work out how far the mouse moved. Today's mainstream sensors, such as PixArt's PAW3395 and PAW3950, track at 650–750 IPS, survive 50 G of acceleration and offer DPI into the tens of thousands. DPI is resolution, not precision: most pros use 400–1600, because higher settings only magnify the same hand tremor. What you feel is the sensor's consistency, its lift-off distance (usually 1–2 mm) and whether the firmware adds smoothing.

### 鼠标传感器是怎么工作的？DPI 越高越好吗？
光学传感器其实是一台每秒拍几千张照片的微型相机：LED 斜着照亮桌面，CMOS 拍下纹理，芯片比对相邻两帧的位移，算出鼠标移动了多远。现在的主流是原相 PAW3395 和 PAW3950 这类传感器，追踪速度 650–750 IPS，加速度 50 G，DPI 上限两三万。但 DPI 只是分辨率，不是精度：职业选手大多用 400–1600，因为更高的 DPI 只是把同样的手部抖动放大给你看。真正影响手感的是传感器的一致性、起跳高度（LOD，通常 1–2 毫米）和固件有没有加平滑。

### Mechanical versus optical mouse switches: what's the difference?
A mechanical switch closes a metal contact; Omron and Kailh GM 8.0 switches are rated for 50 to 80 million clicks. Their weakness is oxidation, which causes the famous double-click fault, and firmware has to add 2–8 ms of debounce to filter contact bounce. An optical switch registers a click when a stem breaks an infrared beam: no contact, no oxidation, no debounce, so lower click latency and longer life. The price is feel: optical switches are harder to tune to the crisp snap of a good mechanical one, and they cost more.

### 机械微动和光学微动有什么区别？
机械微动是金属簧片碰触点，欧姆龙、凯华 GM 8.0 这类标称 5000 万到 8000 万次寿命。它的问题是触点氧化后会误触发“双击”，固件还要加 2–8 毫秒的消抖时间来过滤抖动。光学微动用红外光束被遮断来判断按下，没有物理触点，不会氧化，也不需要消抖，所以点击延迟更低、寿命更长。代价是手感：光学微动的回弹和声音更难调出机械微动那种干脆感，而且成本更高。

### What's the deal with mouse coatings?
The coating decides whether dry hands or sweaty hands can hold the mouse. UV matte coating is the default: cheap and grippy, but it polishes to a shine after a year of palm sweat. Rubberized soft-touch coatings feel best and then age into a sticky mess, which is why premium brands mostly abandoned them. Bare textured PBT or molded-in micro-texture never wears shiny or sticky, at the cost of being slightly slippery out of the box. Some brands skip the question and ship grip tape so the user decides. The test isn't how premium it feels in the store; it's whether you can still hold it after a sweaty round.

### 鼠标外壳的涂层有什么讲究？
涂层决定干手和汗手谁能握住它。UV 哑光涂层最常见，便宜、防滑，但用一年会被手汗磨亮。类肤（橡胶）涂层握感最好，可惜会老化发黏，所以高端品牌基本放弃了。裸 PBT 或微纹理注塑壳不怕磨、不怕黏，缺点是出厂时略滑。还有干脆不涂的：随包装附一卷防滑贴，让用户自己决定。判断标准不在摸起来高级不高级，而是手出汗之后还能不能握稳。

### What are mouse skates made of?
Almost all are PTFE, the same material as a non-stick pan. "Pure" or virgin PTFE glides better than filled blends, typical thickness is 0.6–0.8 mm, and the edges need rounding or they scrape the pad. Glass skates have lower friction, barely wear and stay consistent on cloth, but they're louder, pricier and wear the pad faster. Swapping skates is the cheapest way to get a new mouse: the same mouse on two different sets feels more different than two different sensors.

### 鼠标脚贴用什么材料？
绝大多数是 PTFE（聚四氟乙烯），也就是不粘锅涂层那种材料。“纯 PTFE”比加了填料的版本更滑，厚度一般 0.6–0.8 毫米，边缘要倒圆角，否则会刮垫子。玻璃脚贴摩擦更低、几乎不磨损，在布垫上也更稳定，但声音更大、更贵，而且会加快布垫的磨损。换脚贴是最便宜的“换鼠标”方式：同一只鼠标换两套脚贴，手感差别比换传感器还大。

### 2.4 GHz versus Bluetooth: is wireless slower?
2.4 GHz wireless with a dedicated receiver now matches a cable: 1,000 to 8,000 Hz, and Logitech's and Razer's flagships have been used wirelessly in pro play for years. Bluetooth is a different animal: to save power it spaces connection intervals at 7.5 ms or more and shares the band with Wi-Fi, so it drags in games. Good wireless mice offer both: 2.4 GHz for play, Bluetooth for the laptop and the spreadsheet. The real cost is battery: 8K wireless draws several times the power of 1K, which is why many 8K mice still ship at 1K by default.

### 2.4 GHz 和蓝牙有什么区别？无线会更慢吗？
带专用接收器的 2.4 GHz 无线，延迟已经和有线持平，1000 Hz 到 8000 Hz 都能做到，罗技和雷蛇的旗舰早就在职业比赛里用无线了。蓝牙是另一回事：它为了省电把连接间隔定在 7.5 毫秒以上，而且和 Wi-Fi 共享频段，打游戏会明显拖手。所以好的无线鼠标两种都给：2.4 GHz 用来打游戏，蓝牙用来连笔记本写文档。真正的代价是电池：8K 无线比 1K 耗电几倍，所以很多 8K 鼠标默认还是 1K。

### Mechanical versus magnetic switches, and what is Rapid Trigger?
A mechanical switch closes a metal contact at a fixed point around 2 mm, in linear, tactile or clicky flavors. A magnetic switch carries a magnet in the stem, and a Hall effect or TMR sensor on the PCB reads the field continuously, so the keyboard knows where the key is at every moment: the actuation point can be set anywhere from 0.1 to 4 mm, and Rapid Trigger resets the key the instant it starts moving back up instead of waiting for the top. For games built on counter-strafing, such as CS2 and Valorant, that's a real difference. TMR sensors are more sensitive and draw less power than Hall effect, which suits wireless boards. One caveat: SOCD features that resolve opposite keys automatically were banned by Valve in CS2 in 2024, so check your game's rules first.

### 机械轴和磁轴有什么区别？什么是 Rapid Trigger？
传统机械轴靠金属簧片接触导通，触发点固定在 2 毫米左右，分线性、段落、青轴三种手感。磁轴在轴心里放一块磁铁，PCB 上的霍尔或 TMR 传感器连续读取磁场，所以知道键帽在任何时刻的位置：触发点可以在 0.1–4 毫米之间任选，还能做 Rapid Trigger，即键帽只要往回抬一点点就立刻复位，不用回到顶端。对需要急停的游戏（比如 CS2 和 Valorant）差别很大。TMR 比霍尔灵敏度更高、功耗更低，适合无线键盘。另外，用两个方向键同时按下来自动急停的 SOCD 功能，2024 年起被 Valve 在 CS2 禁用，买之前请先查你那款游戏的规则。

### What's the difference between mouse pad materials and weaves?
A cloth pad is a polyester or nylon weave bonded to a rubber base: a finer, tighter weave glides faster, a coarser texture adds braking and reads as "control", and many control pads add a surface coating for more stopping power. Cloth is humidity-sensitive; on a damp day the fibers swell and the pad slows down, which is why the same pad feels different in two cities. Hard pads come in plastic, aluminum and glass: etched or frosted glass has very low friction, ignores humidity and barely wears, but it's loud, chews through skates and offers no cushion, so wrists tire over long sessions. Hybrid pads combine a coated cloth surface with a firm base to take a little from each. Choose in this order: your aiming style (arm or wrist), then speed versus control, and only then thickness and the picture on it.

### 鼠标垫的材料和纤维有什么区别？
布垫是涤纶或尼龙织物贴在橡胶底上：织得越细越密越“快”（滑），纹理越粗越“控”（有阻尼），很多“控制垫”还在表面加一层涂层来增加停止感。布垫怕湿度，南方的梅雨天纤维吸水后会明显变慢，这也是为什么同一张垫子在不同城市手感不同。硬垫分塑料、铝和玻璃：玻璃垫表面经过蚀刻或磨砂处理，摩擦极低、不怕湿度、几乎不磨损，但声音大、对脚贴损耗大，而且没有缓冲，长时间用手腕累。混合垫把涂层布面和硬底结合，想两头都占一点。选垫子的顺序应该是：先定你的瞄准方式（手臂还是手腕），再定快慢，最后才看厚度和图案。

### How do TMR sticks differ from Hall effect and potentiometer sticks?
Potentiometer sticks measure position through a carbon track in physical contact, which wears and causes drift. Hall effect and TMR (tunnel magnetoresistance) sticks measure a magnetic field without contact, so wear doesn't cause drift. TMR adds higher sensitivity and lower power draw, which suits wireless controllers and high polling rates.

### TMR 摇杆和霍尔摇杆、电位器摇杆有什么区别？
传统电位器摇杆靠碳膜接触测量位置，磨损后容易漂移。霍尔和 TMR（隧道磁阻）摇杆用磁场非接触测量，不会因磨损而漂移；TMR 的灵敏度更高、功耗更低，适合无线手柄和高回报率。

### What does "hearing footsteps" in a gaming headset actually mean?
Footsteps carry most of their energy in the midrange, roughly 1–5 kHz, while gunfire and explosions are broadband and loud enough to bury that range; the effect is called auditory masking. Much "gaming" tuning is just a cut in the bass and a lift in the upper mids so footsteps survive the masking, which is why those headsets make music and films sound thin and sharp. Closed-back designs block the crowd and suit a tournament stage; open-back designs image more naturally but leak sound. Real directional cues come from spatial processing such as HRTF (head-related transfer functions), not from a "7.1" sticker on the box.

### 电竞耳机的“听脚步”到底听的是什么？
脚步声的能量集中在中频，大约 1–5 kHz，而枪声和爆炸声是宽频的巨响，会把这段频率整个盖住，这叫听觉遮蔽。所谓“游戏耳机”的调音，很多只是把低频砍掉、中高频抬起来，让脚步声不那么容易被盖住，代价是音乐和电影听起来又薄又尖。封闭式耳机隔绝环境噪音，适合比赛现场；开放式声场更自然、定位更准，但会漏音。真正的方向感来自 HRTF（头部相关传输函数）这类空间算法，而不是“7.1 声道”这个贴纸。

### What does a wireless mouse need to enter the EU?
Mainly the Radio Equipment Directive under the CE mark (including its cybersecurity requirements), EN 62368-1 safety, EMC, RoHS and REACH, plus the new Battery Regulation, UN38.3 battery transport tests, WEEE take-back and PPWR packaging rules. Brazil requires ANATEL radio approval and Portuguese labeling.

### 无线鼠标进入欧盟需要哪些认证？
主要是 CE 标志下的 RED 无线指令（含网络安全要求）、EN 62368-1 安全、EMC、RoHS 和 REACH，以及新电池法规、UN38.3 电池运输测试、WEEE 回收和 PPWR 包装要求。巴西则需要 ANATEL 无线认证和葡语标签。