Logitech Mouse M240 Silent-Graphite Black

Technical Specifications

• SilentTouch Technology
  90% noise reduced Left/Right-click, Middle click 

  
  
• Sensor technology
  • Smooth optical tracking
  • Nominal value: DPI range
  • DPI range: 400-4000, Steps of 100 DPI
• Buttons
  Number of Buttons : 3 (Left/Right-click, Middle click)
• Scrolling
  • Line-by-line scrolling
  • Scroll Wheel: Yes, 2D, mechanical
• Battery life
  • Battery life: 18 months 
  • Battery Details: 1 x AA (included)
• Connectivity
  • Connection Type: Bluetooth Low Energy Technology
  • Wireless range: 33 ft (10 m) 
  • Connect / Power: Yes, on/off switch.