LED head lamp with CE,ISO certificate With a rechargeable battery which can work for 10 hours. AC,DC are available. LED lamp power: 3w, colour temperature: 6000kFacular can adjust at the 250mm, ranging from 6mm to 65mmAfter full charged, battery can last for 10 hoursLife of the bulb: 20,000 hours.Comfortable for wearing, more dapper, size is adjustableOffer by Poweam Medical LED head lamp