Specification: Material: ABS, Metal Color: Red/Blue/Green Output power: 5mW Wavelength: 532nm - 405nm Range in darkness: More than 1000m Power supply: AAA battery (not included) x2 Output mode: Constant wave Size: 14 x 155 mm 1. Made of premium materials to ensure durability and long life. It has a sturdy construction, attention to detail, resistance to pressure and abrasion, and is able to withstand extended use. 2. The pointer pen is ergonomically designed to conform to the natural grip of the hand, providing a comfortable hold. 3. Utilizes advanced crystal optics technology to produce a bright, focused beam with long-range visibility. 4. Ideal for pointing at targets on projection screens, video displays, and graphic presentations. Suitable for educational, professional, or outdoor use such as alignment or astronomy. 5. Simple to operate: press the button to turn on, release to turn off automatically. Package Includes: 1 x Pointer Pen