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 mm 1Made 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. 2The instructor pen is ergonomically designed to conform to the grip habits of the human hand, providing you with a comfortable grip experience. 3Utilizing the latest crystal optics technology to create a premium pen pointer. It emits a strong, brilliant beam with a long range. 4It 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. 5Simple to operate, press the button to turn it on and release the button to turn it off automatically.Package Include:1 x Pointer Pen