Fashion and casual Smart Wearable Devices， best partner of cell phone (Android version and iPhone version)， anti-lost alert.Paring with Bluetooth， answer call by a button.Easy to operate and convenient to wear.APK， used for reading synced SMS only works for Android phones， can be downloaded through the after sale center of our siteThe bracelet is charged through standard Micro USB input port.Many people have their phones in their hand bags and don't feel the vibration or even hear their ring tone in busy areas. With this awesome bracelet you can have a wearable fashion accessory and never miss a call again.Caller ID and LED Time Display， so you can see the phone number of the person calling， instead of having to struggle opening your bag in a busy area， you can instantly tell if the call is important or not.Another great feature of this bracelet is that it features a time display. Unlike most wireless techniques， bluetooth uses time division duplex to arrange the transmission slots so that it can avoid collision.The top-rated 250mAh battery enables you run into the bracelet for 168 hours constantly.It is also the best gift for your family and friends.Gender: UnisexStyle: Fashion & CasualWatches Categories: Digital watchShape of The Dial: ArchMovement Type: Digital watch Display Type: NumbersScreen: OLED capacitive touchscreen display Pedometer: 3D gravity sensor gyro Memory: 32M Speaker: 0.9WMicrophone: 38DB flat vibration motor: 8 x 2.7 mm Bluetooth: version 3.0 Battery capacity: 250mAh Charge time: 2-3 hours Standby time: 168 hours Charging DC: 5V / 1A (Please check the charger when charging specification) Charging interface: Universal standard for micro USBProduct Weight: 0.04 kg Product Size: 7.3 x 6.0 x 2.9 cm / 2.9 x 2.4 x 1.1 inchesThickness: 1.2 cm / 0.5 inch Diameter: 2.9 cm / 1.1 inch Inner perimeter: About 18.0 cm / 7.1 inch What's in the box?1 x Smart bracelet1 x Micro USB charging cable1 x Manual in English/ Chinese1 x Artist display base