Amazfit Balance

Amazfit Balance is a watch from 2023, sitting in the mid-range band at an indicative $199.

It reads 20 of the 33 signals this comparison tracks. Full coverage of activity. Rarer readings it does take: hydration, muscle mass and body fat.

By sensor class: 10 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from an optical heart rate sensor, an optical blood oxygen sensor, bioimpedance electrodes, a GPS receiver, a barometer and an accelerometer. Blood oxygen is measured through the night, not continuously through the day.

Its 14 days per charge are the 43rd longest of the 80 devices of its kind here that publish a figure. The AMOLED screen can stay always on. Multi-band GPS. Rated 5ATM, fine for swimming. It weighs 35 g. On top of the tracking it also handles music on the device, contactless payments and offline maps. Case size 46mm. No subscription is required.

Wellness watch w/ BIA body-composition (fat/muscle/water); no ECG; superseded by Balance 2.