Features: Height-adjustable magnifying glass. 5 replaceable lenses with different magnifications. LED indicator light that can be rotated 60 degrees. Easy to replace 3 x 1.5V AAA batteries. Perfect for reading and micro-work. Suitable for any head size. Note: Fully adjustable headband with soft padding, comfortable fit for any head size. The light source box can be used separately as a lighting source after being dismantled. The LED light can be rotated about 60 degrees, and the light source box with the battery compartment is detachable. 5 replaceable/interconvertible lenses with different magnifications marked in the middle. Widely used in mechanical processing, electronic repair, jewelry appraisal, watch repair and miniature engraving, etc. Specifications: Single-plate lens amplification: 1.0x, 1.5x, 2.0x, 2.5x, 3.5x.. LED: 2 pieces. Battery: 3 * 1.5V AAA batteries Head circumference: adjustable. Lens material: high quality PC. Head material: environmental protection acrylic.