... function Best-selling 3d optical mouse .2.4G Wireless Mouse. Gift mouse Specificationswireless mouse,mice,computer mouse,pc mouse,new mouse,promotional gift,optiacal mouse,2.4g wireless ... saving functionResolution frequency (800dpi -- 1600dpi) conversion through the resolutionfrequency conversion buttonLow-voltage alarming functionReceiver storage space and carrying easilyWireless carrier frequency ...