Google Pixel Watch 4 (41 mm, Wi-Fi) / Samsung Galaxy Watch5 (40 mm, Bluetooth)

The 45 mm model weighs 36.7 g.

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

Sapphire crystal is a glass material that strongly resists scratching. The 44 mm version has a 1.4-inch, 450 × 450 screen.

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.

The electrical heart signal is used for ECG and bioelectrical impedance for body composition estimates; availability of these features varies by country.

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

This version has no LTE; the LTE version is sold separately.

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

5ATM suits shallow-water activities such as swimming, not diving.

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

WPC is the body behind the Qi wireless charging standard. The 44 mm version has a 410 mAh battery.

The watch works with phones running Android 8.0 or later with more than 1.5 GB of RAM; it cannot be used with an iPhone.