100% Brand New.Material: ABS MetalColor: BlackSize: 20*12.5*0.5cm/7.8*4.9*0.2inch (L x W x H)Style: MiniType: Bluetooth WirelessWrist Support: NoInterface Type: USBApplication: Desktop， Laptop， Tablet.Standby Time: 30 daysCharging Time: 4 hoursModulation mode: GFSKOperating Voltage: 1.8-3.6VLithium battery capacity: 110 mALithium battery life: 3 yearsSustainable use of time: 44 hoursIt can be used with smart phone， tablet， notebook， and desktop computer.Sleep function， if any action， within 15 minutes the keyboard will automatically go into power-saving modePortable， ultra slim and very convenient for you to carry it to travel or go on a business tripPackage Content: 1 x? Wireless Bluetooth Mini Keyboard Net Weight: 164g