Office Optical 1000 DPI Grey Ambidextrous RF Wireless 10 m Scroll type: Wheel Buttons quantity: 3 Power source: Batteries 2 AA Alkaline Wireless Optical Mouse- 5G anti-interference wireless transmission- Accurate cursor positioning- 9 Months Battery Life- Ultra-small Nano receiver5G anti-interference wireless transmissionBy using 5G wireless transmission and keeping away from the 2.4G wireless channel, interference from Bluetooth and Wi-Fi equipment can be avoided.Accurate cursor positioningEnjoy accurate and smooth cursor control with the 1000 DPI high-definition invisible tracking engine.9 Months Battery LifeWith Rapoo's latest energy saving technology and power switch, you can use your mouse without power interruption for up to 9 months.Ultra-small Nano receiverSo small and unobtrusive, you can plug it into a USB-port and forget about it. No more worries about lost receivers. Mouse Frequency band 5 GHz Recommended usage Laptop Scroll Yes Buttons type Pressed buttons Buttons quantity