The Targus Wireless Compact Laser Mouse features a three-button device built for comfort and durability. The Wireless Compact mouse is ideal for the on-the-go laptop user. With its lightweight and Stow-N-Go design, it easily packs for travel. It also eliminates the clutter of wires and cords due to the micro USB receiver. Featuring 2.4 GHz, it provides a stronger wireless signal for excellent tracking and five times greater range compared to most 27 MHz models. This mouse comes equipped with 2 AAA Energizer Max batteries for up to five months of battery life depending on frequency of use. The 1000 DPI high-precision laser technology makes this mouse 20x more accurate compared with other optical mice. It accurately responds to mouse movements making this mouse the right choice for portability and accuracy. Product Features and Specifications: Compatibility- Designed to work with Windows 7, 2000, XP, Windows Vista Mac OS X v10.4 or later Optical Sensor Technology- 1000 DPI high-precision laser sensor technology accurately responds to mouse movements Easy Storage- Stow-N-go design helps portability by keeping the USB port stored inside the body of the mouse Ergonomically Designed- Provides long lasting comfort due to its sleek, ergonomical form RoHS Compliant- Yes