Keyboard K220. Mouse M150. Specification: Connection: Wireless 2.4 GHz Advanced. Connection range: up to 10 meters. Encryption: 128-bit AES. Battery life of the keyboard: 24 months. Battery life of mouse: 5 months. When the keyboard key is silent. Connection: USB. System Requirements: Windows Vista, Windows XP, Windows 7, Windows 8, Windows 10. Battery keyboard: AAA. Battery mouse: AA.