Venu 4

Garmin Venu 4 is a watch from 2025, sitting in the premium band at an indicative $549.

It reads 21 of the 33 signals this comparison tracks. Full coverage of activity. Nothing at all from body composition. Rarer readings it does take: AFib detection, ECG recording and Body Battery.

By sensor class: 11 at high accuracy and 3 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from an optical heart rate sensor, ECG electrodes, an optical blood oxygen sensor, a skin temperature sensor, a GPS receiver, a barometer and an accelerometer. It records an ECG and screens for atrial fibrillation. Those are screening features, not a diagnosis. Blood oxygen is a spot reading you take yourself, not a continuous one.

Its 12 days per charge are the 51st longest of the 76 devices of its kind here that publish a figure. The AMOLED screen can stay always on. Multi-band GPS. Rated 5ATM / 50m, fine for swimming. It weighs 38 g. On top of the tracking it also handles music on the device and contactless payments. Case size 41mm & 45mm (38 g bare, 56 g with band). No subscription is required.

September 2025 successor to the Venu 3. Unlike the Venu 3 it adds skin temperature and Training Readiness, so it now measures the full Garmin stack.