Suitable For: Women, Men, Gender, Teenagers, Couples, Adults Operation Mode: Touch + Button Type Wrist Strap Material: Stainless Steel Product Weight :135G After-Sales Service: Store Three Guarantees Packing List: Complete Machine Strap Style: Sporty Compatible Platform :Ios Functions: Waterproof, Photo, Step Counting, Heart Rate Monitoring, Blood Pressure Measurement, Social Entertainment, Bluetooth Call, Smart Reminder, Remote Control Selfie, Sleep Monitoring, Blood Oxygen Detection Color: Black Steel + Vinyl, Silver Steel + Vinyl, Black Milano Steel + Vinyl, Silver Milano + Vinyl, Black Leather + Vinyl, Silver Leather + Vinyl Communication Type: Bluetooth Patent Source: No Endurance :7-14 Days Charging Mode: Magnetic Charging Waterproof Grade: Life Waterproof Screen Type :Amoled Mold Type: Private Mold Case Material: Anodized Aluminum Metal Dial Style: Round Support Customization: Yes Diameter :36-40Mm