The most robust and powerful Apple Watch. 49 mm titanium case in aerospace-grade quality for durability and corrosion resistance. New S9 SiP dual-core processor and second-generation ultra-wideband chip. Water-resistant up to 100 m, suitable for sports and free diving up to a depth of 40 metres. Digital Crown with haptic feedback, side button, action button, double tap gesture, Siri. Large always-on OLED display with up to 3000 nits brightness. Advanced safety features such as siren, backtrack, fall detection, emergency SOS, and crash detection. Designed for outdoor adventures and intense workouts, with a lightweight titanium case, extra-long battery life, and the brightest display ever. Featuring the double tap gesture, a magical new way to interact with your Apple Watch, and precise searching that leads you to your iPhone.