12.4G wireless technology provides a cable-free & clutter-free connection, which is super convenient 2Powered by 1 x AAA battery (Battery is not included). Compatible with most computers 3Auto Sleep Mode--It enters into sleep mode if there is no operation for a long time, energy saving and frugal 4Best for Notebook Users who always work with number keys, Mini digital keyboard 5The remote control is within 10 meters (33ft), beware that wireless range may vary depending on interference or the setup of your deviceDescription:A 2.4G wireless numeric keypad is an essential if you want a cable-free & clutter-free connection. Light weight and compact design makes it both nice and practical. It enters into hibernation/sleep mode if there is no operation for a long time, energy saving and frugal. A perfect choice for you!Features: 1. 2.4G wireless technology provides a cable-free & clutter-free connection, which is super convenient.2. Powered by 1 x AAA battery (Battery is not included). Compatible with most computers.3. Auto Sleep Mode: It enters into hibernation/sleep mode if there is no operation for a long time, energy saving and frugal.4. Best for Notebook Users who always work with number keys, Mini digital keyboard.5. The remote control is within 10 meters (33ft), beware that wireless range may vary depending on interference or the setup of your device. Specification:Material: ABSColor: BlackInterface: USB 2.0Wireless or Wired: 2.4G WirelessRemote Distance: 10mBluetooth Version: NoNumber of keys: 18 (key)Battery: 1 AAA batteries (Not Included)Package Weight: 99gSize: 13.8 x 8.5cm / 5.4 x 3.3inchQuantity: 1pcPackage included:1 x 2.4G Wireless Numeric Keypad1 x ReceiverNote:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.