Features: OOTDTY Short Sleeve Barrels With LED Light. Each barrel with a blindfold can be equipped with two lenses. Suitable magnifying lenses can be selected depending on the size of the object to be observed. Fourteen magnifying lenses and seven different-magnification lenses can be installed on two barrels to achieve multiple magnification effects. Twenty-one magnification combinations can achieve a maximum magnification of 25 times. The barrel and bracket are connected by an inner and outer tooth wrapping structure, which can flexibly and repeatedly adjust the barrel angle according to the needs, and is more durable. The LED lamp can be equipped with two different color temperature lampshades. The color temperature difference can be interchangeable. When observing small objects, there are three different light sources to choose from. They are cold light source, light warm colors, and dark warm colors, which provide a better comfortable working environment for users. The nose bridge is directly molded with stainless steel and soft adhesive. It can be adjusted freely according to the shape of the nose bridge, which is suitable for different people's needs. The angle of the mirror barrel and the beam angle of the LED light can be adjusted so that the light source can accurately illuminate the surface of the observed object. Specifications:Color: White + BlackLens Material: ABS & Acrylic Lens Lens: 3.0X / 4.0X / 5.0X / 6.0X / 7.0X / 10X (21 Combination Magnification)Focal Length: 20 - 166 (Focal Length of Each Magnification, Please Refer to the User Manual)Power Supply: 3*1.5V AAA Battery (Not Included)Item Weight: Approx. 90g / 3.19ozPackage Weight: Approx. 216g / 7.64ozPackage Size: Approx. 16.5*11*7.5cm/8.3*6.1*2.56inPackage Included:1 * Magnifier12 * Lens (3.0X, 4.0X, 5.0X, 6.0X, 7.0X, 10X)1 * Lens Case1 * User Manual (English)