Note:<br>D21 Smart bracelet product details URL:<br>https://www.youtube.com/watch?v=uZtmCWlJZw0<br><br>Function:<br>Model: DFit D21<br>1.Model: D21 Smart Band<br>2.Memory size: 256k<br>3.Acceleration sensor: triaxial accelerometer<br>4.Strap: medical silicone<br>5.Display: 0.66OLED screen<br>6.Vibration motor: cylindrical vibration motor<br>7.Operation way: touch operation<br>8.Battery Capacity: 80mAh (Standby time will depend on the actual using situation.)<br>9.Standby Time: About 5-7 days<br>10.Waterproof : IP65<br>11.Bluetooth version: Bluetooth 4.0<br>12.Rapid brush BUS, can be customized set up the city<br>(Built-in NFC chip)<br>13.Support System: Bluetooth 4.0, Android 4.4 or above 7.0 and IOS system<br><br>The main function:<br>Heart rate monitor, caller ID, text messaging, micro-channel, vibration<br>Step count, distance, calorie consumption<br>Time display, sleep monitoring, camera, anti-lost reminder<br>Smart alarm clock, smart unlock<br>Sports information sharing<br>Firmware Upgrade<br>Sedentary reminder<br>Motion Tracking<br><br>Package include: <br>1 * Bracelet<br>1 * Charging Cable<br>1 * User manual
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