Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
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This fitness band has a 1.72-inch AMOLED display and Bluetooth 5.4 connectivity. It supports call control but cannot be used to speak through the band, and it does not support a SIM card. The stated maximum operating time in ordinary mode is 504 hours.
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