If you're fine with no GPS and want to save even more, there's also the Xiaomi Mi Band 4. It has a similar battery life to the Amazfit Bip 3 Pro and offers up heart rate tracking, but it's a tad ...
The Amazfit GTR 4 is a feature-packed smartwatch with a heart rate sensor and the company’s BioTracker 4.0 PPG biometric sensor that allows you to measure your blood oxygen saturation (SpO2 ...
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