ADJUSTABLE LED LIGHTS: The angle of the LED light can be freely adjusted to provide a wide lighting area. Brightness can be switched between high and low settings using the control button to help protect eyesight. COMFORTABLE TO WEAR: The headband features an adjustable switch at the back for a secure and customized fit. Two side knobs allow adjustment of the magnifier height to achieve the desired viewing angle. Constructed with lightweight materials and a soft, breathable sponge interior for extended comfort during use. COMBINED LENS SLOT DESIGN: Features two lens slots and a fixed front round lens (8X). One or two lenses can be used at a time. Includes five interchangeable lenses (1.0x, 1.5x, 2.0x, 2.5x, 3.5x) and one round auxiliary lens (8x), which can be combined to achieve 23 magnification levels: 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. RECHARGEABLE BATTERY: The built-in battery can be recharged via USB cable. A full charge takes approximately four hours and can be completed using a USB charger, computer, or power bank. WIDELY APPLICATION: Hands-free design with multiple magnification options makes it suitable for a variety of tasks including reading, painting, crafting, modeling, repairing, sewing, soldering, jewelry making, and other detailed work.