Size: 44 mm height, 38 mm width, 10.7 mm depth (40 mm version: 40 mm height, 34 mm width, 10.7 mm depth).

Weight: 47.1 g (44 mm version) or 30.5 g (40 mm version).

Display: Retina LTPO OLED display with 326 pixels per inch, always-on.

Materials: Aluminum, Stainless Steel, Titanium.

Compatibility: Fits wrists with a circumference of 140-245 mm.