Advanced sleep tracking automatically to capture REM, Light and Deep
Smart Alarm(TM) silently wakes you at the optimal time in your sleep cycle
Syncs wirelessly plus 7 days battery life
Android compatibility - UP2, UP3 and UP4 are compatible with Android 4.3 (Jelly Bean) or later.
iOS compatibility - UP2, UP3 and UP4 are compatible with the following iOS devices:iPhone 4S or newer, iPod Touch 5th generation or newer, iPad 3 or newer, iPad Mini 1st generation or newer, iPad Air 1st generation or newer
The more you do, the smarter UP3? becomes, by learning to recognize and automatically log all your activities from running to a pickup game of basketball. Provides understanding of your heart health and advanced detail of your workouts and sleep stages (REM, Light, Deep). Track your food, drink, calories, nutrients and use the UP® App Food Score to quickly know if you are eating right. Smart Coach gives personalized guidance through an understanding of your heart rate & detailed information about your sleep stages & activities. Connects you with friends and family so you can reach your goals together or see how you measure up on the team leaderboards. Learns and automatically logs your fitness activities. Continuously gets better with new features & experiences delivered through free updates. Wirelessly syncs with compatible Apple and Android devices. One size fits most. Vibration motor for alarms, alerts & notifications. Splash-proof & Water-resistant up to 10m. Battery Life: Up to 7 days. Rechargeable Lithium?Ion Polymer, 38 mAh.