Go beyond the limitations of your notebook and complement your workflow with a tactile, responsive 21-key keypad that sports premium scissor-switch keys and is compact enough to take on the go. With an impressive up to 3 months of battery life and a powerful 2.4 GHz wireless connector, you can rest easy knowing that your numeric keypad will be ready for action whenever you are. Manufacturer: Lenovo Group Limited. Manufacturer Part Number: 4Y41C33791. Brand Name: Lenovo. Product Line: GO. Product Name: Go Wireless Numeric Keypad. Package Type: Retail. Product Type: Keypad. Keyswitch Technology: Scissors. Keyboard/Keypad Connectivity Technology: Wireless. Keyboard/Keypad Wireless Technology: RF. Wireless Operating Frequency: 2.40 GHz. Keyboard/Keypad Features: Compact Keyboard. Slim. Numeric Keypad. Rechargeable. Hot Keys: Calculator. TAB. Equal. Esc. Wireless Receiver Interface: USB Type A. Battery Included: Yes. Color: Storm Gray. Keyboard/Keypad Height: 5.28". Keyboard/Keypad Depth: 3.35". Weight (Approximate): 3.84 oz. Operating System Compatibility: Windows 10. Device Supported: Notebook. Platform Supported: PC.