Automatic fitness tracking: Walk, run, cycle, even hop on the elliptical—the Galaxy Fit automatically detects and tracks what you’re doing. Full color amoled display: The always-on, full-color display gives you real-time info at a glance. Touch or swipe to scroll between workouts and notifications. Made with a swim-ready design and military-grade durability to protect it against bumps, dust, extreme heat and bitter cold. Case dimension (H x W)- 45.1 x 18.3 millimeter Wellness monitoring: Tracks daily steps, calories burned, water/caffeine intake and more. Monitors sleep patterns, and sends real-time alerts if detecting an irregularly high heart rate. Compatible devices - Samsung Smartphone, Non-Samsung Android Smartphone(Android OS 5.0 and above, RAM 1.5 GB and above), iOS 10.0 and above, iPhone 7 and above Notification & quick reply: You’re always connected, so you’ll be notified of incoming calls or texts right on your Galaxy Fit. Plus, send quick, preset replies, and keep an eye on schedules, the forecast and more. (82)