Small enough for travel yet big enough for comfortable computer use / Windows and Macintosh / USB Connection # The Stow-N-Go Notebook Mouse comes with a USB Receiver that attached to the bottom of the mouse when you need to take it with you. The receiver also has an On/Off Switch to help conserve power when not in use for up to 6 months. The built-in low power indicator lets the person know when to change the two AA batteries. Also the tilt wheel gives you a 4-way scrolling for easy navigation to scroll vertically and horizontally. This mouse has a switchable 800/1,200/1,600 DPI Resolution allowing for adjustable cursor speeds. 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 todays widescreen notebooks and features # Power Conservation - 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; Two AA batteries are included # System Requirements - Windows® 2000, XP, Windows Vista™ or Mac OS X (10.1 or above), USB port required # Approximate Unit Dimensions: 3.75" x 2.38" x 1.5" # Approximate Unit Weight: 4.4 oz