Sensor technology Sensor technology: Darkfield high precision Nominal value: 1000 dpi DPI (Minimal and maximal value): 200-4000 dpi (can be set in increments of 50 dpi) Buttons Buttons: 6 buttons (Left/Right-click Back/Forward Wheel mode-shift Middle click) Scroll wheel: Yes with auto-shift Horizontal scroll: Yes by holding side button while turning the wheel Wireless operating distance: 10 m 4Wireless range may vary depending on operating environment and computer setup. Battery Battery: rechargeable Li-Po (500 mAh) battery Battery life: up to 70 days on a single full charge. Get three hours of use from a one-minute quick charge Optional software: Logitech Options and Logitech Flow