Sensor technology: Darkfield, Nominal value: up to 4000 DPI, Battery life: up to 70 days, Battery: Li-Po (500 mAh), Number of buttons: 7, Gesture button: Yes, Scroll Wheel: Yes, Wireless operating distance: 10m, USB Speed: Full Speed 2.0, Unifying: 2.4 GHz, Bluetooth 4.0, Unifying: Windows 7, Windows 8 or later, Mac OS X 10.8+, Bluetooth (Required: Bluetooth low energy technology): Windows 8+, Mac OS X 10.10+