SpecificationModel: TS-D192Frequency: 2.4GHz Transmitting Distance: 10m Wavelength: 650nm Laser power: about 3mW Laser color: RedBattery type: 18650 Battery capacity: 2500mAh One charge is good for 60 days with 1 presentation per day and 30 minutes per time. Dimension: 135.0*24.8*24.8mm Weight: 85g Input: 5A-1A; output: 5A-1A Charging time: 4-5 hours via 5V-1A charger(charger is not included) Support system: Windows vista, Windows 7, Windows XP, Windows 8 and Mac OS. Operating Instructions Page up (press it for 1.5S-2S to enter/exit full screen) Page down Light button: long press the button to turn on laser light and loose it to turn the light off. Support video play only for windows media player Fast forward: short press up button enter/exit full screen press up button for 1.5S-2S rewind: short press down button pause/play: press Light button twicePackage includes 1 X Pisen presentation remote& power bank II1 X Micro USB cable 1 X User manual.