Logitech M280 2.4GHz 3-keys 1000DPI Wireless Optical Mouse, Wireless Range: 10m(Black) 1. Create hand comfort: The soft rubber grip is curved to give your right hand great comfort. 2. Battery life up to 18 months: Energy efficient batteries, no need to change frequently. In addition, the mouse automatically goes to sleep when not in use. (Battery life varies by user and calculation conditions). 3. Smooth and accurate tracking: Using Logitech advanced optical tracking technology, it has extraordinary accuracy and responsiveness. 4. Plug and Play Ultra Micro Receiver: The ultra-miniature receiver enables convenient and reliable wireless connectivity. Technical Parameters: 1. Sensor Technology: Logitech Advanced Optical Tracking Technology. 2. Resolution: 1000dpi. 3. Battery life: 18 months. 4. Battery: 1 AA battery. 5. Number of buttons: 3. 6. Scroll wheel: Yes. 7. Tilt function: None. 8. Mouse support Unifying Excellent Technology: Yes. 9. Receiver support Unifying Technology: No. 10. Wireless receiving range: 10m. 11. Wireless System: Advanced 2.4GHz wireless connectivity technology. 12. Connection interface: USB receiver. Specification: Mouse (height x width x depth): 105.4x67.9x38.4mm. Mouse weight (with battery): 91g. Ultra-micro receiver (height x width x depth): 14.4x18.7x6.1mm. Ultra-miniature receiver weight: 1.8g. System Requirements: 1. Windows VistaWindows 7Windows 8Windows10. 2. Mac OS X 10.5 or higher. 3. Chrome OS. 4. Linux Kernel 2.6+. 5. USB port. Package Contents: Wireless mouse x 1 Ultra Micro Receiver x 1 User Documentation x 1