Stainless Steel Case Sleep Tracking Health & fitness tracking with GPS Compatible with iOS & Android 1. 2\" Super AMOLED Display with Gorilla Glass DX Water resistant to 5 ATM + MIL 810G Bigger display, lighter design Outlined in a subtle rotating bezel, it s easier to see and focus on what matters with an even bigger screen. Galaxy Watch3 is thinner and lighter than its predecessor, with a sophisticated look and slimmed down frame. Get a better night s sleep Galaxy Watch3 records your REM cycles, deep sleep, and total sleep time to score the quality of your rest. Samsung partnered with the National Sleep Foundation to include educational content and sleep tips right on your device, to help you understand sleep better. Improve every stride Galaxy Watch3 s running guide lets you keep pace as you get tips on the go. The advanced algorithm analyses how you move to help improve your form. You can even measure VO2 max values and keep up with your daily, weekly, and monthly performance right from your phon Add a little context with smart reply Stay connected with others even on the go - and without fumbling to reply. Galaxy Watch3 s smart reply analyses texts and photos you receive and gives you suggested replies, supporting different categories that include food, celebrations, selfies, and more.. Team up with other apps Put together a team of Galaxy Apps to join you and your phone in your day-to-day. Find your phone and see your phone s photos from your watch, or switch between devices to control your music and check reminders. The perfect partners are all on your wrist