AUTOMATIC SETUP: 1. It’s support 2.4GHz Wireless connection. No device drivers needed, no delays and dropouts, fast data transmission. 2. The maximum working range up to 32.8ft. 3. The software drivers will be automatic installed in few seconds. Keys are easy and silent to press, greatly speed up your productivity! | USER FRIENDLY: 1. Put signal receiver into a USB port and start crunching numbers right away (USB receiver nearby battery compartment). 2. Made of good quality ABS Material which offer great comfortable touch and precise control. 3. multi-compatibility: Lihongtec Wireless numeric pad applicable to Laptop, PC, Desktop, Surface Pro, Notebook, notebook, low power consumption number keyboard. | POWER SAVING: Power Supplied by 2 x AAA Battery (not included). It will auto power-saving mode when not in use for 15 minutes, press any key can awake up the keypad. | ERGONOMIC DESIGN: 1. Ergonomic function design: 22-keys input, num-lock, move keys, Backspace etc. 2. Integrated ergonomic tilt provides added comfort which helps reduce strain, great for those working on spreadsheets, accounting files or financial applications. 3.It also has auto sleep function, lower power consumption, reflect energy saving. Press any key to awake up the keypad. | Quality d: 1. Please feel free to contact us if you have any question.