Specification: Magnification: 1.5X - 8X Light Source: Yes LED Quantity: 3 Frame MaterialABS Lens Material: Acrylic Focal Length: 38 - 330mm Adjustable: YES Replace Lens: YESp> Front Lens Ratio: 1.5X Second Lens Ratio: 8X Battery Size: AAA Batteries (included) Color: White Features: - Three LED lights are on the front of the helmet to ensure a large area of uniform illumination. - The lighting tempers can be freely regulated. - The light can be converted to meet different needs and protect vision. - A separate adjustment switch on the back of the headband can easily adjust the tightness of the headband and fix it. - The headband adopts environmentally friendly material for comfortable wearing. - The large headband angle regulating wheel can be adjusted at the time of wearing. The anti-slip design makes it easy to regulate. - It adopts a separate lens design, and other lenses can be folded up - Each product can be installed with two lenses, the 6 lenses can constitute 15 different magnifications. - All lenses can be folded and folded. - Expand the lens to increase the range of the field of view. - Three AA batteries can be placed in the high-capacity battery compartment to greatly extend the lighting time of the LED lights