Picotronic-Adjustable-Red-Line-Laser-Modules-Battery-Powered-Picotronic-70110166-p-A-Class-2-red-line-laser-module-with-adjustable-line-thickness-&-focus-The-module-is-battery-powered-making-it-particularly-suitable-for-mobile-applications-p-Picotronic-70110166-Red-Class-2-Laser-5m-16m W-2-7-3-3VDC-70m A-650nm-Wavelength