Logitech M221 Silent Wireless Mouse

• Dimensions Mouse (height x width x depth): 99 mm x 60 mm x 39 mm Weight: 75.2 g Height x Width x Depth: 14.4 x 18.7 x 6.1 mm Weight: 1.8 g, Color: Silent Gray and Silent Red
  
• System Requirements Windows?? 10 or later, Windows 8, Windows RT, Windows 7 Mac OS X 10.5 or later Chrome OSTM Linux Kernel 2.6 USB connection: available USB port required.
  
• Technical Specifications Connection Type: 2.4GHz wireless connection Wireless range: 10 meters Connect / Power: Yes, on/off switch Battery Details: 1 x AA Battery life: 18 months* *Battery life may vary based on user and computing DPI (Min/Max): 1000?? Sensor technology: Logitech Advanced Optical Tracking Sensor resolution: 1000 dpi Scroll Wheel: Yes, 2D, optical Number of buttons: 3 Standard and Special Buttons: Middle click
  
• Package Contents Mouse Nano receiver 1 AA battery (pre-installed) User documentation