Built in large capacity rechargeable safety lithium polymer battery wireless digital keyboard with 110mAh large capacity lithium battery, fully charged keyboard standby time can reach 45 hours. Automatic sleep function, wireless keyboard will automatically，enter sleep mode when not in use, to save electricity and energy. Pressing any key can wake up the keyboard within 3 seconds. Multifunctional numeric keyboard: equipped with 35 basic keys: dedicated control keys for all numbers, homepage, end, tabulation,page up and down, calculator keys, screen capture keys, a set of arrow keys, etc. Improve data input speed and accuracy. Note: Due to the special nature of the Mac operating system and IOS system, the nine keys in the upper left corner do not work for Apple/iOS/Mac users, such as "page up", "page down" ”Search for ',' screenshot ', and' ins' Key. Compact and ergonomic design: ABS material makes the numeric keyboard smooth, sturdy, and durable. Ergonomic tilt, scissor keys, and anti slip pad on the back provide optimal comfort. The automatic sleep function reduces power consumption and can wake up the numeric keyboard by pressing any key. Wide compatibility: The Attoe numeric keyboard for PC is widely compatible with Windows/Android/iOS/OS,suitable for smartphones and laptops Brain, desktop, tablet, MacBook Pro/Air, MacBook Mac Mini.