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: Up to 70 days on a single full chargeBattery 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: 393.7 in (10m) Wireless technology Dimensions: 100.3 x 61.6 x 34.4 mm