The Apple Watch SE 40mm Aluminium Case GPS is lightweight and made from 100% recycled aerospace-grade alloy. The Sport Band is made from a durable yet surprisingly soft high-performance fluoroelastomer, with an innovative pin-and-tuck closure. Retina LTPO OLED display Built-in Bluetooth Built-in GPS/GNSS Always-on altimeter Second-generation optical heart sensor Accelerometer up to 32 g-forces with fall detection Ambient light sensor Speaker 50% louder 32GB capacity Magnetic charging cable 50m water resistance Built-in rechargeable lithium-ion battery up to 18 hours Works with Siri The Apple Watch SE 40mm Silver Aluminium Case GPS has powerful features to help keep you connected, active, healthy and safe. Advanced sensors to track all the ways you move and to measure your favourite workouts. Find devices, people and items Locate devices or get pinged when you leave your iPhone behind. See where your friends are. Track down an AirTag. Do it all from your watch. Cycle tracking Log your period, record symptoms like cramps and get predictions for your next fertile window. Home control Control lights, locks and the garage door. Or access a security camera to see who’s at the front door. Camera remote Use Apple Watch as a viewfinder for your iPhone camera. See a preview, then set a timer or just snap away. Easy navigation Get turn-by-turn directions from Maps right there on your wrist. You can even receive a tap when it’s time to turn.