Specification: Magnification: 2.5X/3.5X Working distance: 320-420 mm Depth of field of view: 90mm/80mm Field of view: 100mm/60mm Power: 5W Working time: 5 hours Strength: 15000-30000 lux Lamp life: 10,000 hours Input voltage: AC100-240V/50-60HZ rechargeable lithium battery, adjustable brightness hint: 1. When using battery power, if the light brightness weakens significantly, it needs to be charged in time. 2. This product can only work under DC conditions. Doesn't work while charging. 3. Please turn off the power when not in use or charging. 4. Liquid detergents cannot be used to clean the product. 5. When the battery is not fully charged, it needs to be charged in time, otherwise the battery will be scrapped. Precautions: 1. When using it for the first time or not using it for a long time, please charge it for more than 6 hours. 2. Please use a power distribution adapter to avoid damaging spare parts. 3. Please use a damp, clean soft cloth to clean the device, and then wipe away the water with a dry cloth. 4. Clean the optical glass with alcohol and adjust the screw parts. 5. Do not bathe or subject this device to high temperature or pressure. 6. Pay attention to the LED light and avoid direct exposure to your eyes. 7. Do not look directly into the sun while wearing a magnifying glass. 8. Keep the device dry and do not use it in humid places. 9. Do not use hard objects or dirt to adhere to or wipe the optical glass. 10. Please dispose of used batteries according to relevant regulations and do not throw them away. 11. Put the device into the packaging box after use. Packing list: 1 x glasses with binocular magnifier 1 x battery 1 x LED headlight 1 x power adapter 1 x screwdriver 1 x glasses clip 1 x cord clip 1 x cleaning cloth 1 x flexible headband 1 x user manual 4 x screws