Headband Magnifier, Reliable Magnifier Glasses Lightweight for Documents for Maps for Reading Newspapers Specification: Condition:100% Item Type: Magnifying Glass Color: white + black Magnification Times 7x 10x 15x 25x Lens Length 71mm 50mm 33mm 20mm Battery: 6 x LR1130 button batteries not included Battery Capacity: 65mAh x 6 Lighting Source: 2 x LED lightsSize: Approx. 175 x 155 x 55mm / 6.9 x 6.1 x 2.2inunfolded 85 x 155 x 55mm / 3.3 x 6.1 x 2.2infoldedApplies to: Read newspapers, documents, maps; Repair electronic parts, jewelry, clocks and mobile phones; Beauty eyelashes and other operations.Operation method: 1. Light source switching: A. There are 3 scale marks on the top of the battery compartment, which are "turn off light source", "soft light", and "high light". The on the battery cover can be rotated to aim at the without scale, and the light source can be switched by technology; B. Flip the LED lamp holder to the lens barrel, and the lamp holder is closer to the lens, which can increase the lighting effect. 2. Lens installation and removal: A. When you need to increase the magnification, you can install an extension lens. There is a raised indicator on the edge of the outer frame of the extended lens. Align it with the lens mounting of the lens barrel and put it into the extended lens, and then tighten it to the right. B. When the expansion lens needs to be removed, unscrew the expansion lens to the left and remove it. 3. Bracket adjustment: There are raised indicators on the inside of the eyes and feet. Align the scale grooves at the bottom of the inside of the bracket to pull out or push the glasses feet to adjust the length. 4. Lens barrel adjustment: There are adjusting screws at the connection between the lens barrel and the spectacle frame. Slightly loosen the adjusting screw, the lens barrel can be adjusted horizontally on the bracket. After adjusting to a suitable position, tighten the adjusting screw. 5. Replace the battery: A. Adjust the indicating battery on the battery cover to the "power off" position, then press down the battery cover and continue to rotate it backwards to: the battery compartment is opened at the "" to open the battery compartment; B. Remove the old battery and replace 3 new LR1130 button batteries, align the indicator of the battery cover with the "battery compartment open" and press the battery cover, "A" battery cover needs to be aligned with "A" battery compartment," The B" battery cover needs to be aligned with the "B" battery compartment and rotate forward to the "Power Off" position interface to complete the battery replacement. Package List: 1 x Frame With 2 x 10x Lenses 2 x 7x Replacement Lens 2 x 15x Replacement Lens 2 x 25x Replacement Lens 1 x Manual Note: 1. Don't put the magnifying glass in direct sunlight to avoid fire; 2. Do not use a magnifying glass to observe the sun, so as not to burn your eyes; 3. Do not use ethanol, gasoline and other chemical liquids to wipe the lens and housing.