Function: Waterproof, Step Counting, Heart Rate Monitoring, Blood Pressure Measurement, Bluetooth Call, Smart Reminder, Remote Control Selfie, Sleep Monitoring, Blood Oxygen Detection Communication type: No SIM card slot Screen type: TFT screen Waterproof Level: Daily Waterproof Case Material: Aluminum Alloy Appropriate for: Men, Unisex, Teenagers, Adults Operation mode: Touchscreen + Button Wristband material: silicone Watchband Style: Sporty Compatible Platform: for iOS Color: black, gray, white, pink, gold frame with black strap, silver frame with black strap, starlight color Dial style: Square Radio transmitting equipment model approval code: 20205589 Diameter: 41-43mm