Optical 1000 DPI Black 10 m Scroll type: Wheel Wireless Optical Mouse- 10 meter wireless transmission- 9 months battery life- Accurate cursor positioning10 meter wireless transmissionReliable 2.4G wireless connection up to 10 meters.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.Accurate cursor positioningEnjoy accurate and smooth cursor control with the 1000 DPI high-definition invisible tracking engine. Mouse Frequency band 2.4 GHz Recommended usage Universal Scroll Yes Buttons type Pressed buttons Number of scroll wheels 1 Scroll type Wheel Movement resolution 1000 DPI Movement detection technology Optical Design Product colour Black Ergonomic design Yes Ergonomics Plug and Play Yes Wireless range 10 m Power Service life of battery 9 month(s)