Improve productivity: Our wireless keyboard is perfect for professionals who want to enter a long sequence of numbers into spreadsheets, accounting programs, and grade books The accessory for lap Helpful Numeric Keypad - Improves efficiency Enter the data faster! The numeric keypad includes the back space key, the home page, the end key, the tab, a set of numbers, a set of arrow keys, a c Rechargeable and energy-saving: The numeric keypad can be charged, which can avoid wasting batteries and is environmentally friendly If you dont use the numeric keypad for more than 20 minutes, t The ergonomic design and the medium-height buttons also help to avoid discomfort on the wrist The rubber pad on the bottom is non-slip to provide the comfort and to secure the digital pad firmly