Huami Amazfit Gtr 2 Review: A Smartwatch with Blood-Oxygen Saturation Detection

After the success of the Huami Amazfit Gtr, Huami has now launched the new smartwatch which is named as Amazfit Gtr 2. the watch is said to be equipped with the modern bio tracker TM 2 PPG bio-tracking optical sensor. The company itself develops this bio-tracker, and it also supports blood oxygen saturation detection. In …

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