Blue purple Laser Pointer Pen
Max Output power: 5mW (Class III)
Wave length: 405nm.
Range in darkness: more than 100 meters.
Power: AA Batteries x2 (not included)
Output mode: Constant Wave.
Blue laser beam
Dimension: approx: 13 *153mm
Press the push button to turn it on, release the push button to shut if off automatically.
It will be used to point at any desired targets on projection screens, video monitors, and presentation graphics