Feature: 1. 2.5X: This head mounted magnifying glass can zoom in exactly where you want to zoom in, making objects clearer and easier to manipulate. 2. 100‑240V: Rechargeable batteries or use an AC power adapter. A full charge lasts up to 6 hours, providing bright, even and focused light. The brightness of the light can be adjusted according to your needs. 3. ADJUSTABLE: The adjustable support headband distributes weight and relieves stress, relieving discomfort and headaches, and the user can adjust the headband to fit his head with multiple adjustment points. Ideal for long term tests and surgeries. 4. OPTICAL COATING: This Head mounted magnifiers use the latest optical coating technology to reduce reflection and improve image sharpness. 5. MULTIFUNCTION: Can be used for different purposes besides surgery, like reading, painting, observing, modeling, repairing, sewing, welding, jewelry making and other hobbies or crafts. Specification: Item Type: 2.5x Head Mounted Magnifier Material: ABS Product Purpose: Suitable for lighting, human machine relationship requirements or frequent movement of the environment. Such as dental surgery, welding, jewelry making, etc. Detachable lithium battery: 2000mAh x 2(built in) Magnification: 2.5x. Package List: 1 x Head Wearing Holder2 x Power1 x 1.5 Magnifying Glasses2 x Eye Frame1 x 2.5x Zoom Lens1 x Charging Case1 x USB Cable1 x Instruction Manual1 x Storage Box