Dental Loupes with Light 2.5X Surgical Binocular Magnifier & Dental Headlight with Filter Specification: Portable LED headlight High intensity:>15000-30000Lux Continuous run-time:>5 hour The power of the LED bulb:3W 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 Rechargeable lithium battery Light weight, longevity,more comfortable carry Packing List: 1. LED head light: 1 each 2. Adaptor: 1 each 3. Battery: 1 each 4. Clip: 1 set