The future of health is on your wrist with the new Series 6 Apple Watch.Measure blood oxygen levels as a key indicator of overall wellness.Four sensors work with the Blood Oxygen app to get real-time results.ECG app offers an ECG similar to electrocardiogram and analyze heart rhythm.Sleep app helps establish a bedtime routine and tracks sleep patterns.Track workout metrics for any type of workout in real-time.Always-on altimeter continuously tracks elevation changes whether indoor or out.Control your music podcasts and audiobooks on your wrist.Activity Rings show activity for the day so you stay motivated.Share activity with friends and family and even engage in competitions.Fitness+ - get workouts from the top trainers with monthly or yearly subscription.Always-on Retina display with swipe down notifications and swipe up control center.Choose or customize the face to match your mood or style.Offers other features such as Messages Apple Pay Siri and Maps.Aluminum case made from 100% recycled aerospace-grade alloy.Band made of soft fluoroelastomer with pin-and-tuck closure.Ion-X glass display.S6 SIP with 64-bit dual-core processor.Digital crown with haptic feedback.Water resistant to 50 M.Case: 40mm x 34mm.Band fits wrists 130-200mm circumference.Includes Magnetic charging cable.