Quarton Laser Module VLM-650-12 LPA (SMALL DOT-SPOT LASER) Red Small Spot Dot Laser, smaller laser spot for Industrial high-precision positioning, measuring, alignment, leveling, adjusting, targeting and laser sighting device.Notice: This item is not a laser pen. Laser modules are not laser pens. Wave length: 650nm. Output power: Class IIIa  less than 5mW. 2.6~5 VDC operation. Dimensions: D10.5 x 39 mm. Red laser. Small-Spot solution - Adjustable Focus Laser module for use with high-precision devices. This module has integrated optic, laser diode, and APC driver circuit. APC driver circuit enables constant Laser output power. Includes patented solid brass structure for the best shock resistance and better heat transfer consideration. High-Accuracy Aspherical Plastic Lens provides small Dot-Spot. Beam Divergence: 0.25 mRad.