Retina display with 1000 nits. Cellular - use carrier plan to stay connected w/o a phone. Workout and Mindfulness apps. Crash Detection auto connects with emergency services and notifies contacts. Heart Rate app - high or low heart rate or an irregular rhythm. Sleep app - tracks sleep and shows sleep trends. WatchOS 10. S8 SIP chip. Built-in GPS. Up to 18 hours of battery life. Water resistant to 50 M. Silver aluminum case. Storm blue sports band with pin-and-tuck closure. Case size: 40mm x 34mm x 10.7mm. S/M Band fits wrists 140mm-190mm in circumference
