Cherry CYMOTION SOLAR WIRELESS. Device interface: RF Wireless, Keyboard layout: AZERTY, Keyboard number of keys: 134, -. Movement detection technology: Optical, Button functions: Standard & 10 side-mounted XPress keys. Keyboard dimensions (WxDxH): 495 x 247 x 37 mm, Keyboard weight: 1.188 kg. Battery type: Integrated rechargeable battery. Operating temperature range (T-T): 0 - 50 °C