LED Head Mount flashlight is easily Adjustable from the house of Renmax. Bright Light, metal Body with a unique hands-free sensor, Battery life indicator and C-Type charging port make this headlight perfect for your professional use. Ergonomically Designed Elastic Headband which is Constructed from tough, high quality, lightweight materials. Ideal Use for Cycling, Long-Distance Running, Hiking, Caving, Camping, Maintenance work, car repair, Reading etc. How to Turn ON Sensor: Press the Power Button (any of two) for 5-Sec continuously, The Sensor indicator button will blink and turn ON steady, Your light is in hands-free sensor mode. Move your hand or any object in front of the sensors to the ON/OFF light.