Wireless keyboard for Bluetooth® enabled devices Keyboard layout: QWERTY GR Touchpad for easy navigation Builtin Lithiumpolymer battery with 180mAh I 3.7V I 0.666Wh Rechargeable via micro USB port: DC 5.0V/0.5A Up to 30 hours of operation Up to 120 days standby Connection: Bluetooth version 5.0 Frequency range: 2402 – 2480 MHz