A simple, reliable mouse with plug-and-play wireless. Reliable wireless no delays or dropouts the tiny wireless receiver gives you a connection you can count on. All-year power pack with 12 months of battery life, you don't have to deal with the hassle of frequent battery changes. (Battery life may vary based on user and computing conditions.) Built to last you will enjoy the high quality and reliability Logitech is known for, plus a 3-year limited hardware warranty. System Requirements: Windows Vista or Windows 7, Windows 8 Mac OS X 10.5 or later Chrome OS Linux kernel 2.6+ USB port Package Contents: Mouse Nano receiver 1 AA battery (pre-installed) User documentation Technical Specifications Mouse Dimensions (height x width x depth):60 mm (2.36 in) x 99 mm (3.89 in) x 39 mm (1.54 in) Mouse Weight (including battery): 75.2 g (2.65 oz) Receiver Dimensions (height x width x depth):14.4 mm (0.57 in) x 18.7 mm (0.74 in) x 6.1 mm (0.24 in) Receiver Weight: 1.8 g (0.06 oz) Sensor technology: Advanced Optical Tracking Sensor Resolution: 1000 Number of buttons: 3 Scroll Wheel (Y/N): Yes Battery life: 12-month battery life* Battery type: 1 AA battery Wireless operating distance: Approx 10m* Wireless technology: Advanced 2.4 GHz wireless connectivity Interface: USB receiver Supported OS:Windows Vista, Windows 7 Mac OS X 10.5 or later Product Origin: China * It may vary based on use and computing conditions.