Specification: 1.LoupesMagnification: 3.5X Working distance: 420mm Depth of field: 80mm Field of View: 60mm Weight: 52g Frames: Ni-alloy or Titanium 2.LED lamp Portable LED headlight High intensity>1500030000Lux Continuous run-time:>5 hour The power of the LED bulb:1 W The lifetime of the bulb:10000 hour All loupes are optional Very small volume and weight Battery pack weight:100g Charge voltage:AC110V/240V/50-60Hz Using the rechargeable lithium battery, light weight, longevity and the more comfortable carry, it is suitable for all kinds of surgical operation Features 1.Loupes - Head Strap - Adjustment Tool - Setting Target - Flip Grip - Ultra Light Weight (75.0 grams) - One Step Pupillary Adjustment - Convenient 420mm Working Distance - Adjustable Angular Viewing - Large Depth of Field - Easy Convergence Settings - Safety Soft Touch Frame - Flip-up Design - Large Field of View - Stylish Designs - Multi-Person Use - Handy Protective Carry Case - Inclusive cleaning cloth - Screwdriver - Flexible Headband 2.LED lamp Portable LED headlight High intensity>1500030000Lux Continuous run-time:>5 hour The power of the LED bulb:1 W The lifetime of the bulb:10000 hour All loupes are optional Very small volume and weight Battery pack weight:100g Charge voltage:AC110V/240V/50-60Hz Using the rechargeable lithium battery, light weight, longevity and the more comfortable carry, it is suitable for all kinds of surgical operation Packing List: 1.Main glass: 1 each 3.Handy Protective Carry Case: 1 each 4.Inclusive cleaning cloth: 1 each 5.Screwdriver: 1 each 6.Flexible Headband: 1 each 7.Adjust Tool: 1 each 8. LED head light: 1 each 9. Adaptor: 1 each 10. Battery: 1 each 11. Black case: 1 each