Key Features . Aluminium CaseTrack your steps monitor your heart rate and more!Car crash detectionwatchOS 9Built-in GPS to track activity and share your location!Compatible with iOS SmartphonesWater resistant to 50 metres . Fast is fashionable.The new S8 SiP chip makes the new Apple Watch SE up to 20% faster over the previous generation Redesigned with the planet in mind.The redesigned back case is made with a new production process that reduces its carbon footprint by over 80%. Its perfectly colour-matched to the Watch case which is made with 100% recycled aluminium. Swim-suitable.Apple Watch SE is water resistant to 50 metres. Track your splits and sets in the pool. Map your route in open water. See accurate metrics even when using a kick board. Whether youre splashing swimming or surfing the waters fine. More Metrics. More Motivation.Stay active and motivated with Activity rings. And train like never before with the enhanced Workout app. Now you can try custom workouts and get advanced fitness metrics like Heart Rate Zones Stride Length Ground Contact Time and Vertical Oscillation. Crash Detection. A safety feature we hope youll never need.For the first time Apple Watch SE is able to detect if youre in a severe car crash. When a crash is detected Crash Detection can automatically connect you with emergency services provide dispatchers with your location and notify your emergency contacts. Crash Detection uses the combined power of an improved 3-axis gyroscope and a new g-force accelerometer that has the highest dynamic range in any smartwatch. It also uses a microphone a barometer GPS and an advanced sensor-fusion algorithm trained on over 1 million hours of real-world crash data to detect if youre in a severe crash. A watchful eye on your heart health.Check your heart rate at any time with the Heart Rate app. And get notifications for high or low heart rates or an irregular heart rhythm. Stay centred with Mindfulness.The Mindfulness app is here to help you reduce everyday stress be more present and mentally prepare to take on new challenges. It can lead you through a series of calming breaths. And remind you to centre yourself by reflecting on a short thought-provoking theme. Get a closer look at your shut-eye.TThe Sleep app tracks your sleep working with your iPhone to help you create a schedule and bedtime routine to meet your sleep goals. See how much time you spent in different sleep stages like REM Core or Deep sleep as well as when you might have woken up. View your sleep trends to see how consistently youre meeting your goals. The only thing it wont do is count sheep. More connected to everything you care about.Check notifications with a glance. Pay with your wrist for just about anything with Apple Pay. Easily skip song or adjust the volume all while keeping your phone in your pocket The perfect watch for Family Setup.With Family Setup everyone in the family like your kids and older adults can have an Apple Watch. Even those who dont yet have their own iPhone. Its all the connectivity wellness and safety features you love for everyone you love. Fun and independence for them. Peace of mind for you. Put your best face forward.Choose from dozens of Apple-designed watch faces and new faces from Nike. And customise your own faces with complications colours and styles tailored to whatever youre into. You can even share watch faces with friends and family by email or text..