Feature: 2.4G working frequency, 15M wireless transmission distance. 11mA working current, ultra low power consumption, intelligent power saving, long standby time. 1600DPI resolution, which allows you to quickly locate objects in use. 250Hz return rate, no delay in mouse use, no frame skipping, smoother office experience. Compatible for Win2000 / WinNT4.0 / WinXP / Win.NET / Win7/8/10 / Mac OS X10.8. Spec:Number of Buttons: 3Key 3DCompatible System: For Win2000 / WinNT4.0 / WinXP / Win.NET / Win7/8/10 / Mac OS X10.8Return Rate: 250HzWorking Frequency: 2.4GSwitch: FD 3 Million White SpotsResolution: 1600 DPIWorking Current: 11mABattery Model: AA (not included)Color: White, Black, Red, Green (Optional) Package List:1 x Mouse1 x Receiver