Machined from high-strength aircraft aluminum and anodized with Mil-Spec finish. Stand up to recoil than most other laser gun sight. IIIa Class Green Laser Power Output ≤5mw, features 520nm wavelength. Highly visible green laser reaches 200 meters during day and up to 2000 meters at night. Ultra lightweight and compact. Super sleek and low profile design allows to fit in most holsters which is convenient for concealed carry. Built-in magnetic USB rechargeable feature. Just stick the supplied USB charging cable to the charging port without any removing operation, easy and safe.