Dominion Hobby is an authorized Byrna dealer. Stainless steel laser housing for enhanced longevity. Up to 2 hours of constant run time. Auto-shut off technology to conserve battery life. Compatible with all Byrna pistol and rifle launchers. Class 3A 3mW laser visible up to 200m in daylight. Simple, fast user installation. Comes with USB-C charging cable and Allen wrenches.