K380 2.4GHz Portable Multimedia Wireless Keyboard + Mouse (Black)

Wireless keyboard 1. Connection method: 2.4G wireless (USB receiver) 2. Transmission distance: 10m 3. Operating frequency: 2408-2474MHz 4. Working voltage: 3.7V 5. Power supply: 2 x AA batteries (not included) 6. Dimensions: 285x125x10mm Wireless mouse 1. Connection method: 2.4G wireless (USB receiver) 2. Transmission distance: 10m 3. Power supply: 1 x AA battery (not included) 4. Dimensions: 110x56x20mm