product description This product set remote control computer functions and laser pointer one、 it is with the PC or notebook computers、 projectors、 student learning、 corporate meetings such as the use and widely used in product demonstrations、 electronic teaching、 conferences and other multi-functional handheld tools. Wireless computer control distance of not less than 15 meters、 so you can freely operate your computer from anywhere in the classroom or conference. Embedded red laser pointer remote control、 laser pointer、 laser button、 flip key、 Page Down key three function keys. Product SpecificationsRemote control technology: radio frequency technology (non-directional remote control range limit)Remote distance: <15mLaser Range: <200mWavelength: 650nm Power: 5mw withinMaterial: high quality plastic (black rubber paint surface)Battery: 23A one batteries (not included)Size: 11.8 * 2.0 * 2.0cm.Receiver: square、Computer Interface: USB interface、 plug and play、 no special driversSuitable for WINDOWS98 / 2000 / ME / XP various systemsFunction: laser pointer、 wireless remote control / downColor:BlackPacking Content:1 x Receiver1 x Transmitter (This product is not packing、 do not contain batteries)