With a rechargeable rated capacity 900mAh lead battery. Durable recharging period more than 250 times for the long-life batteries. With energy-saving, high-power and long-life LED bulb by which discharging time for 8-15 hours.Fully adjustable headband, comfortable fit for any size head.The angle of the lamp cap can be adjustable for 0-70 degree.Especially designed for people who need to work at night and dark environment.