Techology: Radio Frequency Function:page up/down,laser pointer, blank screen Power on/off Built memory optional(64MB-16G) Wireless Presenter with laser pointerControl distance: 15MLaser distance: 200mLaser output power: less than 1MW( class 2), less than 5MW(class 3)Laser wavelength: 650nmMaterial: plasticDismension: 13x3.2x2.1cmBattery: 3pcs AAAUSB plug and play, no drive required