The barrel and bracket are connected by an inner and outer teeth wrapping structure, which can adjust and fix the barrel angle flexibly and repeatedly according to need, and is more durable. LED lighting lamp can be equipped with two different color temperature lamp shades. The color temperature difference can be interchangeable. When observing small objects, there are three different light sources to choose. They are cold light source, light warm color and dark warm color, which provide a better comfortable working environment for users. The nasal bridge is directly moulded with stainless steel and soft glue. It can be adjusted freely according to the shape of the nasal bridge, which is suitable for different people's needs. The angle of the mirror barrel and the illumination angle of the LED light souree can be adjusted so that the light source can illuminate the surface of the observed object accurately. Specifications: Color: White + Black Material of Lens: ABS & Acrylic lens Lens: 3.0X / 4.0X / 5.0X / 6.0X / 7.0X / 10X / 15X(21 combination magnification) Focal Length: 20 ~ 166(focal length of each magnification please refer to user manual) Power Supply: 3 * 1.5V AAA battery (not included) Item Weight: Approx. 90g / 3.19oz Package Weight: Approx. 216g / 7.64oz Package Size: Approx. 16.5 * 11 * 7.5cm / 8.3 * 6.1 * 2.56in Package includes: 1 * Magnifier 12 * Lens(3.0X, 4.0X, 5.0X, 6.0X, 7.0X, 10X) 1 * Lens Box 1 * User Manual (English) We are committed to providing good quality services, if you have any needs, welcome to consult,we will do our best to meet 。