Pixel Watch 2 Design Changes Improve Heart Rate Tracking but Cause Charger Incompatibility Issues
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Switching to pogo pin charging allows for a new multipath heart rate sensor, improving accuracy by 40%, but limits internal space.
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Proprietary chargers are common for wearables since they are too small for USB-C and need to ensure secure charging.
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Pins allow faster charging but can corrode over time. Wireless chargers have alignment issues.
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The Pixel Watch 2's tweaked design means first-gen chargers and cases are incompatible, leading to e-waste.
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These compatibility issues are common early in a wearable's lifecycle as companies refine designs over generations.
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