1. Material: ABS 2. Interface: USB/Bluetooth dual mode 3. Number of keys: 61 keys 4. System compatibility: Windows/Mac/IOS/Android 5. Use time: continuous use for 10 hours 6. Features: Bluetooth/wired dual-mode connection, powerful driver, universal for three systems 9. Applicable: office, game, home, Internet cafe 10. Packing list: keyboard, data cable, manual 11. Transmission distance: 10 meters 12. Battery capacity: 800 mah 13. Dimensions: 29.1 x 10.1 x 3.9 cm 14. Weight: 580 g

http://olla.gr/rk61-61-keys-bluetooth-2.4g-wireless-usb-wired-three-modes-tablet-mobile-gaming-mechanical-keyboard-cable-length-1.5m-style-tea-shaft-black/