Specification:  Memory: 256KB+32KB.  Display Screen: 0.95 inch OLED screen, 96*64 resolution.  Wirless Type: Bluetooth 4.0.  Item Size: 33mm*11.5mm*260mm.  Bracelet Weight: About 38g.  Battery Capacity: 120mAh Lithium polymer battery.  Charger Method: Magnet pogo pin.  Normal Use: About 3-5 days.  Standby Time: About 10 days.  Waterproof Level: IP67.  Accelerometer: 3-axis, 3D acceleration.  Support OS: Android 4.3 or above, IOS 8.0 or above.     Features:  1. Real-time BP & HR Monitor:  DM68 wristband built in high performance cpu, support the real-time detecion for blood pressure and heart rate. With accurate data recording, provide the valuable references for your health status.  2. Stringent IP67 Waterproof:  Elaborate design and rigorous process control, achieves sweatproof, dustproof ,and real IP67 waterproof resistance (works well underwater 1.5m). Don't put it into hot water or sink for long time.  3. Precise Sport Pedometer:  Adopts 3-axis motion, precisely counts steps, movement distances and calories consumption. With monitoring activity data, scientifically manages your sporting goal for better workouts.  4. Calls & Messages Reminder:  Syncs the calls, messages and notifications from social apps (Facebook, Twitter, Skype, Instragam and etc.) It timely reminds you with quiet vibration. Never miss out some important issues.  5. Other Features:Sedentary reminder,Alarm,Find my device,Sleep monitor,Hand raise light up,etc.     Package Included:  1 x Smart Bluetooth Bracelet.  1 x Mangetic Charging Cable.  1 x User manual