Headband Magnifier USB Rechargeable Head Mounted Magnifying Glasses with Removable Lenses 2 LED Lights for Reading Close Work Features: Replaceable lens design: 6 replaceable lenses 1.5X20x2.5X3.5X4.0X4.5X; lenses are made of acrylic resin and the surface hardness of the lens can reach 5H level which is more wearable and durable. Adjustable brightness level: With two white LED lights there are two brightness levels providing super strong light which can illuminate the detailed surface. Press the switch on the glasses stand there are two kinds of brightness optional. Efficient rechargeable battery: With 300MAH rechargeable lithium battery USB power cable can be charged for 1 hour to full battery. Just plug the USB cable into the magnifying glass and plug the other end into the slot of the USB power supply to automatically charge. Save money and energy while enjoying lasting bright light. You don t need to buy the battery again! Comfortable and easy to use: Equipped with ergonomic eyeglass holder it is comfortable to wear and has a fixed magnifying glass in front of the eyes. The headband can effectively prevent falling so you can work easily for a long time. Wide uses: View your work or text with high definition up to 500% original size. The perfect hands-free magnifying glass for reading painting watch restoration arts and crafts. Specification: Name: Glasses-type Rechargeable Magnifying Glass Product magnification: 1.5X20x2.5X3.5X4.0X4.5X Material: ABS metal fittings three groups of acrylic optical lenses Lens size: about 1540mm/60.63inch Product size: 175-172-60mm/6.89-6.77-2.36inch (unfolded) 65 * 172-60mm/2.56-6.77-2.36inch (folded) Packing size: 185-9575mm Focal length: 357mm 274mm 204mm 158mm 136mm 125mm Power supply parameters: 10v-240V 50HZ 5V 0.14W MICRO-USB Illumination light source: two pure white LED lights (two levels of intensity can be adjusted) Packing List: 1 * Magnifying Glass 1 * Instruction 1 * USB 1 * Cleaning Cloth 1 * Cloth Bag 1 * Lens Storage Box 1 * Color Box