20 Times More Sensitive - Targus laser technology has 20x more tracking sensitivity than typical optical mice, for greater accuracy and improved use on shiny surfaces : Power Management - Recharge via the USB charge cable, use the mouse during charging to ensure uninterrupted operation (no charge cradle required) : Wireless Freedom - RF wireless technology provides a clean, uncluttered workspace free from cables : Convenient Extension Port - Plug the wireless receiver and charge cable into the extension port, no need to reach around for PC ports.