Features1、Made of premium materials to ensure its durability and long life. It has a sturdy construction, attention to detail, resistance to pressure and abrasion, and is able to withstand long hours of use.2、The instructor pen is ergonomically designed to conform to the grip habits of the human hand, providing you with a comfortable grip experience.3、Utilizing the latest crystal optics technology to create a premium pen pointer. It emits a strong, brilliant beam with a long range.4、It can be used to point at any desired target on projection screens, video displays and graphic presentations. It can also be used for forensics, illumination, pointing, alignment, sky pointing (astronomy) or just to be cool.5、Simple to operate, press the button to turn it on and release the button to turn it off automatically.Specification:Material: ABS, MetalColor: Red/Blue/Green Output power: 5mWWavelength: 532nm - 405nmRange in darkness: More than 1000mPower supply: AAA battery (not included)x2Output mode: Constant waveSize: 14 x 155 mmPackage ListPackage Include:1 x Pointer Pen