YEMON Fitness Tracker Heart Rate Monitor Blood Pressure Smart Band Fitness Activity Tracker Sport Bracelet Pedometer Watch FUNCTION: Movement Monitor(steps,distance,calories), Sleep monitor, Hand raise light up,Sedentary reminder,Heart rate monitor, Find my device. UALITY CRAFTSMANSHIP: 0.95 OLED touch screen, Resolution 96*64. Long-lasting battery: Just need to charge 2 hours and then you get a 7 days standby fitness tracker. Compatible With: Android 4.3 Version or Above Android Smartphones, and IOS 8 version or Above Apple iPhone. WHAT YOU CAN GET FROM YEMON: Promise to provide our customers with 18 months warranty from the date of purchase; 40days money back.