Features 1、With detachable light source box, it is easy to take out. 2、The angle of lamplight can also be adjusted freely. 3、There are two parallel lens assembly parts, and you can also overlap tow lenses for getting a highter magnifying multiple. 4、You can also use this product even if you wear glasses. 5、Dial adjustment headband conforms to comfortably fits most head sizes. 6、 Specification Material of lens: Acrylic resin (Processed by crack-proof rigid coating) Main Materials: ABS resin, PP resin Fixed lens magnifier: 4X-89 x 29 mm(L x W) Flip lens magnifier: 4X-89 x 29 mm(L x W) Round Single-eye magnifier: 5X -29 mm(dia) Power by: 2 x AAA batteries (Not included) Size: 9.84 x 7.80 x 2.56 inch / 25 x 19.8 x 6.5 cm (L x W x H) Adjustable perimeter of headband: 20-25 inch It can be quite easily used under the following conditions: (1) Operate or read at a dim or dark place (2) Interesting work such as carving, handcraft and sewing (3) Assemble or repair small fitting (4) Check the finished product Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Helmet Type Head Mounted Magnifying Glass with LED Light(batteries are Not included)