Specifically designed for iMac?? Macbook?? Laptop / Notebook?? Desktop / PC Computer Compatible with Windows and OS X System?? with Mini USB Receiver.</br>Up to 10m (32.8 ft) working range; Plug-n-Play: No device drivers are required.</br>Hibernation mode enabled automatically?? no power button needed.</br>Compact Size: 18-keys wireless numeric keypad. Easy to carry and store.</br>With built-in mini receiver. An AAA battery is needed for the keypad to work.</br></br>Product Description</br></br>Specially design for the <b>iMac?? Macbook?? Laptop / Notebook?? Desktop / PC Computer</b><br/><br/> <b>Easy to use:</b><br/> The portable and sturdy wireless numeric keypad with USB receiver provides you with convenient use-just plug the receiver into the USB port?? no further action needed.<br/><br/> <b>LED indicator:</b><br/> The blue lights on when the device is in good working condition. There is light on the "ck"button to indicate whether it is ready for data entry. <br/><br/> <b>Comfortable key on the keypad:</b><br/> The numeric keypad is made with good quality material for comfortable and quiet use. <br/><br/> <b>Specification:</b><br/> Size: 4.8 x 3.2 x 0.7 inches<br/> Weight: 2.85 oz<br/> Effective Range: 10 Meters<br/> Operating frequency: 2.4 GHz technology<br/><br/> <b>Package Includes:</b><br/> 1 x Wireless Keypad<br/> 1 x Mini USB Receiver<br/> 1 x User Manual<br><br> <b>Warranty:</b><br> Replacement or full refund Available if it is determined by us to be defective. 30 days money-back satisfaction guarantee?? buying with confidence!</br><br/>http://www.amazon.com/gp/product/B01CEL06TW  quality