Features:Left & right double eye patches magnifier/ loupe with adjustable LED4 Pairs of replaceable lens with different magnificationsLED light source and battery compartment are designed separatelyHandsfree eyeglasses legs and headband are interchangeable to ensure more comfortable and tight wearingEye patches can be moved leftwards and rightwards， and can rotate 180 degrees upwards and downwardsWidely used in mechanical processing， electronic repair， jewelry appraisal， timepieces repair and miniature engraving， etcLens magnifications: 10X， 20X， 25X， 15XLED Lights: YESBattery: LR1130 batteryMaterial: ABS + Optical LensLoupe Size: Approx. 13cm x 19cm x 5.5cm/ 5.12" x 7.48" x 2.17"Strip Length: Approx. 26.5cm-44cm/ 10.43"-17.32" (adjustable)Lens Diameter: Approx. 2cm/ 0.79"Package Included:2 x 10X Lens2 x 15X Lens2 x 20X Lens2 x 25X Lens1 x Microscope Magnifier Loupe1 x Strip1 x User's Manual