Rapoo 5.8Ghz Wireless Mouse (3100P Blue) Reliable 5.8Ghz Wireless runs at 2.4x higher frequency than 2.4G, faster, more stable than 2.4G and far away from the interference of 2.4 GHz wireless, bluetooth and WIFI device With Rapoo's latest energy saving technology and power switch, you can use your mouse without power interruption for up to 18 months Plug and forget NANO receiver Pointing Device Wireless Technology: 5.8Ghz RF Pointing Device Host Interface: Nano USB Movement resolution: 1000 dpi 2x AA alkaline battery (pre-installed)