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+ | [* black] All together, this back cover is home to a tiny speaker and linear actuator, a microphone, a barometric sensor, and the heart rate and SpO2 sensors. Most of those parts live on the same flex cable octopus which is not removable. |
+ | [* black] The replaceable part in the bunch are the loudspeaker—if you trust the reading on the other side of the "not removable" battery. Which... we don't. |
+ | [* black] The power cell delivers 1.59 Wh (410 mAh @ 3.87 V). That output puts it above the [guide|135891|Galaxy Watch3|stepid=270168|new_window=true] (1.3 Wh) and the Apple Watch [guide|136694|Series 6|stepid=271741|new_window=true] (44 mm) with 1.17 Wh. Only the [guide|141415|Xiaomi Mi Watch from 2021|stepid=283236|new_window=true] provides more juice with 1.62 Wh. |
[* icon_note] ''What’s that, a [link|https://www.tuvsud.com/en/industries/mobility-and-automotive/automotive-and-oem/automotive-testing-solutions/battery-testing%7Cnot uncommon|TÜV sign on a battery|new_window=true]? Haven’t seen this before in a smartwatch. But it’s not uncommon to see [link|https://www.tuvsud.com/en/industries/consumer-products-and-retail/wearable-devices|certification from TÜV for mobile electronics|new_window=true]. |