Comprehensive Accuracy Test Amazfit GTS 2 Mini vs Huawei Watch Fit vs Xiaomi Mi Watch Lite | Review

Fell asleep @ 4am
Alarm @ 09:15 am
O2 ring RHR: 67

Huawei Watch Fit
Bedtime: 3:53
Rise Time: 09:14
Definitive sleep cycles: Good
RHR: 67bpm

GTS 2 Mini
Bedtime: 4:01
Rise Time: 08:22
Definitive sleep cycles: Good but exact opposite of Fit
RHR: 65bpm

Mi Watch Lite
Bedtime: 3:53
Rise Time: 08:37
Definitive sleep cycles: No REM sleep, deep sleep throughout the night
RHR: None

GPS
A lengthy walk lasting 2h 50min and stretching 9.3km as measured by iPhone 12 and Samsung S10.
Huawei Watch Fit stopped recording GPS after I stepped into a shop. After 2h and 4min. 7.24km. Backtracking the smartphone measured GPS distance to that time we can see the actual distance covered was 7.77km.
Hence a variance of 530m or 6.8%
HR: avg-107, max 133

Mini continuously recorded for 2h 50min, final distance measured at 9.04km.
Variance of 260m or 2.8%
HR: avg-105, max 149

MWL continuously recorded for 2h 50min, final distance measured at 8.38km.
Variance of 920m or 9.9%
HR: avg-105, max 149

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