Keyboard Size: L9.4“x W4.84" x H0.19" Number of Keys: 75 Bluetooth HID standard Bluetooth 3.0 broadcom solution Operation range: approx. 32 ft (10m) Pairing range: 2M, 360ºrange Lithium-ion Polymer battery: 200mAh Support: IOS & Andorid Compatibility with Mac Pro, iPad, iPhone , and Android OS phone and tablets (with BT HID standard built-in) Accessories: magnetic charging cable (3” length)