Apple Watch Ultra 2 mockup

The Always-On Retina LTPO2 OLED display measures 410 × 502 pixels at 326 pixels per inch, with a display area of 1185 sq mm, under a flat sapphire crystal.^[2] Brightness ranges from 1 nit to a maximum of 3000 nits.^[1][2] For full-screen art, work at 410 × 502 pixels in portrait and keep important content away from the corners: Apple's developer documentation notes that most watches have rounded corners that may clip content.^[2][4]

The case is Grade 5 titanium and measures 49mm high, 44mm wide and 12mm deep.^[2] On September 9, 2024 Apple introduced a black titanium finish next to the natural one, made with a custom blasting process and a diamond-like carbon coating over the titanium.^[3] Apple lists the weight as 61.4 grams in natural and 61.8 grams in black.^[2] Apple's user guide describes Ultra models as having a corrosion-resistant titanium case, a flat sapphire crystal face and a raised Crown Guard.^[5]

Apple Watch Ultra models have a third button not found on other Apple Watch models, the customizable Action button.^[5] It can be set to start a workout, and from watchOS 11 pressing and holding it switches between actions such as Stopwatch, Backtrack and Flashlight.^[3] The other controls are the Digital Crown, which has haptic feedback, and the side button.^[2] The double tap gesture, tapping the index finger and thumb together twice, controls the watch without touching the display.^[1]