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刷下牙内侧时，手柄甚至会整个倒过来。普通冲牙器靠吸管从水箱取液，方向一变就可能吸入空气，只剩喷嘴发出“嘶嘶”的风声。戴森在这支新牙刷里放入隔膜泵和压力腔，让内部隔膜随着液体减少而扩张，维持供液压力；这也是它解决倒置使用问题的核心设计。
When brushing the inner side of the lower teeth, the handle may even be turned completely upside down. Conventional water flossers draw liquid from a reservoir through a tube, which can take in air when the device's orientation changes, leaving only a hissing sound from the nozzle. Dyson has added a diaphragm pump and pressure chamber to this new toothbrush, allowing the internal diaphragm to expand as the liquid level falls and maintain supply pressure. This is the core design intended to solve the problem of using the device upside down.
CameraJet把电动牙刷、冲牙器、内窥镜和人工智能图像识别装进同一根手柄。刷头下方是一颗直径约1mm、10万像素的微距摄像头，配合频闪补光灯，每秒分析28帧口腔画面，再交给Gap Optical Targeting机器学习算法寻找更容易藏污纳垢的牙缝。从看见目标到喷嘴出液，最快只需100毫秒。
CameraJet combines an electric toothbrush, water flosser, endoscope and AI image recognition in a single handle. Beneath the brush head is a macro camera measuring about 1 mm in diameter with 100,000 pixels. Together with a strobing fill light, it analyzes 28 frames of oral footage per second before sending them to the Gap Optical Targeting machine-learning algorithm, which searches for gaps between teeth that are more likely to trap debris. The time from spotting a target to liquid emerging from the nozzle can be as little as 100 milliseconds.
它采取“看见一处，喷一下”的方式，每次最多向牙缝喷出约0.15ml漱口水，因此不需要传统冲牙器那样的大水箱。手柄中的水箱容量为12.5ml，配套底座带有200ml储液仓，牙刷放回底座并按下按钮后，三秒即可补满。喷嘴也没有采用细长的针状水柱，而是使用覆盖面积更大的锥形液流；戴森认为，这样既能扫过更大区域，也能减少对牙龈和牙釉质的刺激。
It uses a “see one spot, spray once” approach, delivering up to about 0.15 ml of mouthwash into a gap between teeth per burst. As a result, it does not need the large reservoir used by a traditional water flosser. The handle's reservoir holds 12.5 ml, while the accompanying base has a 200 ml reservoir. After the toothbrush is returned to the base and a button is pressed, it can be refilled in three seconds. The nozzle also avoids a thin, needle-like jet, instead using a cone-shaped flow with wider coverage. Dyson says this can sweep across a larger area while reducing irritation to the gums and enamel.
回到刷牙本身，CameraJet配有双层刷毛刷头，内圈较硬的刷毛清洁牙齿表面，外圈软毛照顾牙龈和齿缝；声波马达每分钟振动58000次，并持续改变刷头摆动角度。用户可以选择轻柔、可变和深度清洁三档力度，在边刷边冲、只刷牙和只冲牙三种模式间切换；通过Wi-Fi连接MyDyson微信小程序，还能查看实时口腔画面、刷牙覆盖范围、遗漏区域和长期清洁趋势。
As for brushing itself, CameraJet comes with a dual-layer brush head: the harder inner bristles clean the tooth surface, while the softer outer bristles care for the gums and gaps between teeth. Its sonic motor vibrates 58,000 times per minute and continuously changes the brush head's oscillation angle. Users can choose among gentle, variable and deep-cleaning intensity levels, and switch between brushing-and-flossing, brushing-only and flossing-only modes. Through a Wi-Fi connection to the MyDyson WeChat mini program, they can also view real-time oral footage, brushing coverage, missed areas and long-term cleaning trends.
具体来说，它首先面向不愿使用牙线、却又经常漏掉牙缝的人：设备试图不改变使用习惯，而是把观察和局部冲洗自动嵌入刷牙动作。整机重230g，支持IPX7防水，锂电池和刷头均可更换，包装还包括两个刷头、补液底座、磁吸充电线和旅行盒。不过，3899元的产品究竟能把牙齿清洁到什么程度，仍需更多长期、独立测试来确认；目前能确定的是，它已从“刷牙工具”走向了一套会观察、判断并定点供液的口腔护理设备。
More specifically, it is aimed first at people who do not want to use dental floss but frequently miss the gaps between their teeth: rather than changing users' habits, the device attempts to automatically integrate inspection and targeted rinsing into the brushing motion. The device weighs 230 g, supports IPX7 water resistance, and has replaceable lithium batteries and brush heads. The package also includes two brush heads, a refill base, a magnetic charging cable and a travel case. However, how thoroughly a ¥3,899 product can clean teeth still requires confirmation through more long-term, independent testing. What is clear for now is that it has moved beyond being a “toothbrushing tool” toward an oral-care device that observes, assesses and delivers liquid to specific spots.