Ideal for hands-free lighting, this rechargeable LED headlamp features two powerful LED lights - a white light on the front and a red beacon light on the back for added visibility. It produces up to 300 lumens of wide-angle illumination to help you see more and stay safe during nighttime activities. It has four light modes (Bright Light, Dim Light, Flash); adjust the brightness to your preference. When only one light goes on, that's a low power notification. Use the included micro-USB cable included for convenient charging (power supply not included). Made of adjustable elastic for a comfortable and secure fit; one size fits all.