About this item BLUETOOTH NUMERIC KEYPAD: stable wireless connection with an effective control range of up to 10 metres. Simply plug the receiver into your computer's USB port and start processing the numbers. No drivers required! ERGONOMIC DESIGN: the numeric keypad uses silent keys to create a quiet typing environment. The numeric keypad is equipped with 18 full-size silent keys that are simple and comfortable to use. In addition the angled ramp helps prevent wrist strain. LOW POWER CONSUMPTION: the numeric keypad is powerful and lasts for up to 12 months. The perfect gift for bookkeepers working with Excel teachers entering grades office workers using it for data entry and more. HIGH PERFORMANCE: The wireless numeric keypad supports 2.4GHz wireless connectivity and has an 18-key design with backspace key for easy text correction. The keyboard is comfortable to touch with precise control resilient and responsive reducing the sound of presses.