Sensor technology: Darkfield high precision, Nominal value: 1000 dpi, DPI (Minimal and maximal value): 200 to 4000 dpi (can be set in increments of 50 dpi), Battery life: up to 70 days on a single full charge, Battery life may vary on user and computing conditions., Battery: rechargeable Li-Po (500 mAh) battery, Number of buttons: 7, Gesture button: Yes, Scroll Wheel: Yes, with auto-shift, Standard and Special buttons: Back/Forward and middle click, Wireless operating distance: 10m, Wireless technology: Advanced 2.4 GHz wireless technology, Optional software: Logitech Options and Logitech Flow