Denshine Portable Red Head Light Lamp for Dental Surgical Medical Binocular Loupe (Red) It is the most popular model among dental students, dental hygienists and dentist. It has wide field of view and generous depth of field with high enough power for daily procedures. The lifetime of the bulb:10000 hour. All loupes are optional. Very small volume and weight. Battery pack weight:100g. High intensity&gt;1500030000Lux. Continuous run-time:&gt;5 hour. The power of the bulb:1 W. TipDo not use plastic shell highlight. 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.