4 Interchangeable Lenses: 10X, 15X, 20X, and 25X magnifications offer versatile options for various tasks. Quickly switch between lenses to meet different work requirements. The portable design makes the illuminated magnifying glasses compact and lightweight for easy transport. Ideal for detailed work such as jewelry making, fine painting, watch repair, coin collecting, needlework, and other precision tasks. Detachable Bracket and Headband: This hands-free LED magnifier features interchangeable bracket and headband options. The secure fit helps prevent slipping and enhances comfort during extended use, reducing eye and neck strain. Fully Adjustable Design: The eye magnifier loupe rotates 180 degrees up and down. The LED lighting angle can be adjusted left and right to provide precise illumination where needed. Recommended for Single-Eye Use: The focal length ranges from 0.5 to 6.2 inches. For optimal focus and clarity, it is recommended to use one eye at a time, as simultaneous use with both eyes may result in loss of focus. Specifications: Material: ABS + Optical Lens Lens Magnifications: 10X, 15X, 20X, 25X Field of View: 1.4' (10X); 1.3' (15X); 0.7' (20X); 0.5' (25X) LED Quantity: 2 Product Dimensions (L x W x H): 19 x 14 x 6 cm / 7.48 x 5.51 x 2.36 inches Headband Length: 38 cm / 14.9 inches Package Includes: 1 x Magnifying Glass 4 x Interchangeable Lenses (10X, 15X, 20X, 25X) 1 x Elastic Headband 1 x User Manual