TK90 ULTRA 10 IN 1 smartwatch

S300 Ultra 10 in One Specification:

• Waterproof: Life waterproof
• Battery: 200 mAh
• Normal use: 3-5 days
• Body: Zinc alloy+ABS
• Strap: Silicon
• APP: Fitpro
• Bluetooth Version: BT5.0
• Compatible System: iOS 10.0, Android 5.0
• Features: BT CALL, BT Music
• Additional: Ultra Low Power Chip
• Additional: Heart Rate step tracking