TECHNICAL SPECIFICATIONS  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.    Indicator Lights (LED:  1 LED for battery status  3 LEDs for Easy-Switch on the bottom of the device    Number of buttons: 7    Gesture button: Yes    Scroll Wheel: hyper-fast scrolling, from precision to free scroll in one click.  Standard and Special buttons: Back/Forward, Tilt wheel and middle click    Wireless operating distance: 10 m    Wireless technology: Advanced 2.4 GHz wireless technology    Optional software: Logitech Options and Logitech Flow