The USB rechargeable headlamp has a 1200mAH high-capacity battery, in strong light mode, it can provide at least 3.5 hours lighting time and it can illuminate an area up to 100 meters ahead. The red safety warning light have two modes (full brightness and flashing) can be switched to night travel safety and emergency response. The head lights for forehead uses a design, weighing only 2.2 oz. It is easy to wear on the head without discomfort. The headband also uses elastic material and can adjust the length to easily adapt to different head shapes of adults and children. The hands-free design makes it an essential addition to your running gear. The headlamp can be adjusted 60° to adapt to different lighting needs. and the flexible lighting angle ensures brightness within your range of activities. The headband is soft and adjustable to fit the head perfectly. The , hands-free head lamp provides steady lighting while you work. Colour:Black & Blue Material:plastic Package Contents: 1 * Headlight Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.