Google Pixel Watch 4 (41 mm, Wi-Fi) / Samsung Galaxy Watch5 Pro 45 mm

The 45 mm model weighs 36.7 g.

GIGAZINE gives the 41 mm model's resolution as 426 × 426.

Sapphire crystal resists scratches better than mineral and aluminosilicate glass; the raised bezel around the screen protects the glass from knocks.

The ability to drop to 1 Hz reduces the battery cost of the always-on display.

The co-processor handles notifications and sensor work while the screen is off without waking the main processor, saving battery.

The 45 mm model has a 455 mAh battery and up to 40 hours with the always-on display.

The watch sits in a new side-mounted dock; earlier Pixel Watch chargers do not fit this model.

ECG and some health features may be limited by country; readings are not a medical diagnosis.

Bioelectrical impedance analysis estimates values such as body fat and skeletal muscle; results are not for medical diagnosis.

This entry covers the Wi-Fi model; LTE and UMTS cellular connectivity is only on the LTE model.

5 ATM suits shallow-water activities like swimming, not diving or high-speed water sports.

5ATM covers surface water activities such as swimming, not diving or high-pressure water. MIL-STD-810H is a set of military test methods, not a guarantee of impact resistance.

Some features depend on the phone's Android version and the Pixel Watch app.

The D-Buckle band uses a folding clasp so the strap sits at the same point every time, in place of a standard pin buckle.

Samsung says the battery is 60% larger than the Galaxy Watch4’s.

Wear OS 3 and later do not work with iPhone. Blood pressure and ECG work only in markets supported by Samsung Health Monitor and with Galaxy phones.

Track Back follows the recorded path in reverse to help you return to the start.