Integrated indicator light / Power Conservation with up to 6 months of battery life / RoHS Compliant / Includes 2x AA batteries # The Targus Wireless Laser Stow-N-Go Laptop Mouse features a stow-and-go USB Receiver that attaches securely to the bottom of the mouse for added portability and convenience. The receiver also triggers an On/Off Switch to help conserve power when the mouse is not in use for up to 6 months of Battery life. The built in low power indicator light lets the User know when to change the two AA batteries. The Integrated tilt wheel provides 4-way scrolling for easy navigation by enabling users to scroll vertically and horizontally. For added convenience, this laser mouse features a Programmable scroll button, which allows you to zoom, magnify and more. This mouse offers RF technology coupled with switchable 1,600/1,200/800 DPI Resolution allowing for adjustable cursor speeds, ideal for today's widescreen notebooks and features a soft-touch design for added comfort during use. The dual-purpose Ergonomic design is small enough for travel yet big enough for comfortable Desktop operation. Stow-N-Go Receiver - Wireless receiver attaches securely to the bottom of the mouse for convenient transport # Functionality - Tilt wheel provides 4-way scrolling capabilities for easy navigation # Switchable 1,600/1,200/800 dpi resolution allowing for adjustable cursor speeds, ideal for today's widescreen notebooks and features # Conserve power with the On/Off switch triggered by the receiver for up to 6 months of battery life # Integrated indicator light informs the user when power is low # System Requirements: Windows 2000, XP, Windows Vista or Mac OS X or higher, and USB port required # Weight: 4.0 ounces