Specification: Magnification: 1.5X - 8X Light Source: Yes LED Quantity: 3 Frame Material: ABS Lens Material: Acrylic Focal Length: 38 - 330mm Adjustable: YES Replace Lens: YES 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 intensity can be freely adjusted. - 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 adjustment wheel can be adjusted when wearing. The non-slip design makes it easy to regulate. - It adopts a separate lens design, and other lenses can be folded upwards - Each product can be installed with two lenses, the 6 lenses can constitute 15 different