Product Description Features: 1.3-inch screen: Large size screen display IPS color screen: Enrich your vision 30 words per screen: Large fonts, easier to read Support multiple languages: Support 13 kinds of language display Adjust the screen brightness: Make power saving simple Blood pressure detection, heart rate detection, timing monitoring, directly through the bracelet. The status can be adjusted according to the date detected by the bracelet. Steps, mileage, calories are all available, for you to accurately record everyday motion. Classified to monitor your exercise consumption like skipping, walking, swimming, etc Bracelet supports incoming calls, messages, and any social media. Accurately record every night's sleep information to help you adjust your sleep habits This watch is Bluetooth 4.0. All functions support android 4.4 and up, iOS 8.0 and up smartphones Note: Don't wear this device when bathing or swimming for a long time. Waterproof level is IP67 which means this unit can be dropped into a body of water up to a meter deep for half an hour and is dust resistant. Specifications: CPU: NRF52832 RAM: 16M Display: 1.3inch IPS color Resolution: 240*240 Bluetooth Version 4.0 Battery: 180 mAh Touch Screen: OGS capacitive touch screen, full lamination technology Compass: Yes Band Material: TPU Watch Face: PC Standby Time: 7 days - 20 days Working Time: 7 days Model B57C Usage: Sports Daily activities Package Includes: 2x Smart Watch Model B57C 2x Wristband 2x User manual