Headband Magnifying Glasses with Cold and Warm Light Source Interchangeable Combine 21 Different Multiples 1. Six sets of interchangeable lenses with different magnifications can be freely combined, with a total of 21 combinations. 2. The headband type enables hands-free amplification, which is more efficient and convenient. 3. Equipped with two LED lights with colored caps to create different atmospheres 4. Acrylic optical lenses are scratch-resistant and durable. 5. Ideal tool for reading and inspecting small print, text, parts, coins, jewelry, etc. Specification: 1. Material: ABS+acrylic optical lens 2. Magnification: 3X, 4X, 5X, 6X, 7X, 10X (21 combinations) 3. Focal length: 20-166mm 4. Lighting source: 2 LED lights 5. Battery: 3 AAA batteries (not included) 6. Product size: 200 x160 x 78mm (unfolded)120 x 160 x 78mm (folded) 7. Weight: 95g