General description Magnifying Glasses with 2 LED Lights feature 8 detachable lenses, providing hands-free magnification for various tasks such as repair, reading, jewelry, and watch work. Note: Do not use the loupe on both eyes at the same time. The holder and headband are interchangeable, and higher magnifications result in shorter focal lengths. Technical specifications Color: Black Material: ABS, Glass Focal length: 0.5 - 25.9 cm / 0.2 - 10.2 inches Magnification levels: 2.5X, 4X, 6X, 8X, 10X, 15X, 20X, 25X Battery: 6 x LR1130 batteries Dimensions: 19 x 14.5 x 6 cm