2.5X Magnification Binocular Loupe Dental Loupes Surgical Magnifier With Light Magnifying Glasses Portable Headlight Headlamp Specification of loupe: Magnification: 2.5x Working distance: 280mm-380mm Depth of field: 80mm Field of View: 60mm Frames: ABS Specification of LED light: Portable LED headlight High intensity>15000—30000Lux Continuous run-time:>5 hour The power of the LED bulb:3 W The lifetime of the bulb:10000 hour Input voltage:AC110V/240V/50-60Hz Packing List: 1.Main glass: 1 each 2.Protective caps: 2 each 3.cleaning cloth: 1 each 4.Screwdriver: 1 each 5.Flexible Headband: 1 each 6. Light source: 1 each 7. Charge: 1 each 8. Battery: 1 each