Features: Dynamic Color Display Large Screen Increase the display area to make the information clearly visible. Intimate APP Connection Keep the wristband connected to the APP, and the wristband will vibrate to remind you not to miss any important information. Intelligent Heart Rate Monitoring Use optical heart rate sensor to monitor your heart rate in real time. Monitor Your Sleep Every Night Monitor the time and quality of your sleep in real time and record your sleep condition. Remote Sensing Pictures Turn your wrist to take photos. Specification: Type: Sports Bracelet Wear mode: Wrist strap type BT version: BT4.0 Transmission distance: about 10 meters Screen size: 0.96in Screen resolution: 80160 Wristband material: TPU Length of watchband: 155-240mm System requirements: Android 4.4 or above, iOS 9.0 or above Package weight:42g Package size: 197.52.3cm Packing list: 1Sports Bracelet 1Cable 1Manual