Compatible system: Android5.1 (contain) above, IOS8.0 contain) above.
Flash memory: RAM 52KB ROM 2048KB
Display: 0.96 inch TFT display screen
Bluetooth version: 4.0
Gravity sensor: support
Heart rate: support
Waterproof grade: IP68
Duration: Use for 4 days, standby for 15 days.
Watch size: about 33x20x11mm/1.29×0.78×0.43 inch
Adjustable length: 120-200mm/4.72-7.87inch
– Smart breathing bracelets glow cool during night running, and breathing lights change colors with movement.
– Fashion design, classic rhyming sand grain, thermoplastic elastomer material, comfortable to wear.
– IP68 waterproof level, extended more