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