1)Frequency range : 2400~2483MHz 2)Remote Range : >10m 3)Battery : 2 AAA (included) 4)Operating Voltage : 1.8-3.3V 5)Dimension : Transmitter 125x40x18mm Receiver 56x18x8mm 6)Weight : Transmitter 62g (include batteries) Receiver 6g 7)Laser Output wavelength: 640nm 8)Laser Output Power: <1mW 9)This 2.4GHz Wireless Presentercombines the features of PowerPoint controls.laser pointer and timer into one elegant device.It is a total solution toControl various software in your desktop PC or laptop PC by using this remote control.It offers trus plug-and-play capability of no need for software drivers and the long range. 2.4GHz technology allows for effective presentations up to 33 feet(10m).With one in hand.you are always the shining star in any presdntation.