Quarton Laser Module VLM-650-03 LPA (ECONOMICAL DOT LASER) Economical Red Dot Laser - Low cost solution for consumer grade positioning, measuring, pointing and laser sighting device. Notice: 1. This item is not a laser pen. 2. It is only authorized to be sold by Quarton USA. If you buy it from another seller, you might receive fake module. Wave length: 650nm. Output power: Class IIIa  less than 5mW. 2.6~5 VDC operation. Dimensions: D7 x 21 mm. Red laser. Ideal laser module if cost is a very important consideration. This module has an integrated optic, laser diode and APC driver circuit. APC driver circuit enables constant Laser output power. Aspherical plastic lens provides Dot spot.