Features: 1. No battery: This lighted magnifying glass is equipped with a USB charging cable. Just plug the USB cable into the magnifying glass and connect the other end to the power source and then it charges automatically. 2. With light: The 2 energy-saving LED lights can be turned on or off with a simple switch on the top of the headset and the light angle is adjustable. 3. 5 interchangeable lenses: This magnifying glass is equipped with 5 interchangeable lenses. 1x 1.5x 2.0x and 2.5x magnifiers ideal for reading and hands-free activities such as sewing and knitting. 3.5 times lens very suitable for welding model making reading and electronic repair jeweller s magnifying glass. 4. Close work magnifying glass: The best choice for close-up work such as dentists electricians elderly eyelash artists etc. The perfect solution for sewing crafting reading painting welding pet grooming jewelry. 5. Comfortable to wear: The legs of the magnifying glass on the head can be switched to an elastic headband more comfortable to wear. You can wear this magnifying glass with your own glasses. 6. Suitable occasions: Suitable for seniors amateurs and professionals. Suitable for close work such as dentists electricians jewelers sewing crafts beauty and painting. Specification: Material: ABS acrylic optical lens metal accessories Product size: about 21.5*15*18.5cm/8.46*5.90*7.28in (after assembly) Packing size: about 21.5*15.8*6.5cm/8.46*6.22*2.56in Net weight: about 88g Gross weight: about 350g (including accessories etc.) Magnification: 1 times 1.5 times 2 times 2.5 times 3.5 times Lens focal length: 500mm 330mm 250mm 220mm 140mm Lens: about 95*33mm/3.74*1.3in Packing List: 1*Head Mounting Frame 1*Cleaning Cloth 1*Lens Storage Box 1*Adjustable Headband (wearable) 5*Detachable Magnifying Glasses: 1.0X 1.5X 2.0X 2.5X and 3.5X 1*USB Cable Note: Please remove the magnifying glass when walking to avoid falling and collision.