Timethinker SmartWatch Bluetooth Bracelet For IOS Android USB Charging 3D IPS Blood Heart Rate Monitors W1 ProductTimethinker SmartWatch Bluetooth Watch GPS For IOS Android USB Charging 3D IPS Blood Heart Rate Monitors Outdoor Sports Tracking W1For ModelFor Android 4.4 and Above, For Apple IOS 9.0 and AboveComponentsWatch Straps+Smart BraceletQualityWe test one by one, make sure Grade AA, no dust, no dead pixel.ColorBlack/Red/Blue/OrangePackageBubble Bags+Bubble Chamber, or Original BoxPaymentT/T,Western Union,PaypalDeliveryAfter receiving payment, we'll delivery goods within 1-2 working days by DHL.Samplewelcome but charge you sample fee and freightMOQ1pcsWarranty1 year1. Environmental Conditions
Operating temperature: 14ºF to 122ºF (-10ºC to 50ºC)
Non-operating temperature: -4ºF to 140ºF (-20ºC to 60ºC)
2.Size
Fits a wrist between 5.5 and 7.7 inches in circumference