Optical sensor technology. Optical technology provides improved accuracy and precision. Dual-purpose design Large enough for comfortable desktop use yet small enough for the mobile user. Ergonomic. Ergonomic shape provides support to help prevent palm strain; designed for left and right handed users. Self-storing adapter. Wireless receiver stores in mouse so it's never lost and always ready to use. Compatibility - PC Mac and Netbook compatible. RoHS Compliant - Yes Product Name: Targus Wireless Optical Mouse with "Blue Trace" Technology.