RECHARGEABLE and ADJUSTABLE LED LIGHT: Our headband magnifier with 3 led lights has the function of detachable and adjusting the direction of illumination. When using, you can adjust the illumination direction of led for more precise illuminating angle to meet your need. Also, you can take out the battery to charge. It takes four hours to fully charge through USB cable. Fully-charged battery can make LED light last continuously for 6-8 hours. OPTIVISOR LENSES: Jewelers magnifying glass is equipped with 5 replaceable lens and one small round auxiliary lens, which are made of shatterproof crystal clear optivisor acrylic lens, high definition and light weight, very durable. You can combine these 5 lens and round lens (8x) to get 23 kinds of magnification to meet different close works: 1x, 1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 8x, 9x, 9.5x, 10x, 10.5x, 11x, 11.5x, 12x, 12.5x, 13x, 13.5x, 14x. DOUBLE LENS SLOT DESIGN: Handsfree magnifying headset is designed with two lens slots and one small fixed front round lens(8X). You can put one or two optivisor lenses at one time on the slots. We have provided you five replaceable lenses (1.0x, 1.5x, 2.0x, 2.5x, 3.5x) and the small round auxiliary lens (8x). NOTE:Please refer to our 3rd ad picture to adjust the optivisor lens and the focal length to finish the magnification. COMFORTABLEandADJUSTABLE HEADBAND MAGNIFIER: The headband inner side of the magnifying glasses is wrapped with a soft sponge, which makes it more comfortable when worn. The magnifying headset with light is designed with 3 knobs: You can use the two sides knob to adjust the height / angle of the lens, and use another one knob on the back side to adjust to fit the head size. The small round lens is 360rotatable, and all the optivisor lens can be folded or rotated upwards when you don't need. WIDE APPLICATION: Magnifying headlamp is made of plastic and acrylic, the soft sponge inside of the magnifier ensures a comfort wearing. The head magnifier with light can help you to improve your low vision and release your hands in work at one time. Magnifying glasses with light for close work such as cross stitch, reading, painting, observing, modeling, repairing, sewing, soldering, jewelry making, and other hobbies/crafts. A perfect fathers/mothers day gifts Battery Tips:1. Built-in polymer lithium battery weight 6.3g, size 30 x 20 x 6.2mm, capacity 300MAH/1.11WH. 2. Do not charge while the light is on or in use 3.Battery life can last for 300-500 times charge/discharge 4.The battery may lose power during transportation or storage. Please charge it for the first time 5.The looseness of the battery interface and the charging interface may cause the battery issue 6.If the charging usb cable damaged, Just replace another new micro usb cable to use it. Magnification Tips: with 5 lens and small 8x fixed front lens to meet different magnifying power, the viewing ability is depended on the focal length you adjust. Please refer to the our 3rd ad picture to adjust the lens and the focal length to finish the magnification. If you don't want to hold the object close in order to get magnifying effect, you can adjust the lens slot and lens angle, the headband angle and the place of the objects to help you get a comfortable posture to hands free. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.