LE Rechargeable LED Headlamp, 5 Lighting Modes, Lightweight Headlight for Outdoor, Camping, Running, Hiking, Reading and more, USB Cable Included USB charging: It adopts polymer lithium battery, the capacity is real, safe and durable. The red light lasts for more than 30 hours, and the brightest white light can last for 4 hours. It can be charged with USB cable, charging time is only 3-4 hours. Support 5V DC charger adapter (not included), not compatible with adapter over 5V voltage. Bright and multi-mode: White light provides 150LM brightness, low brightness and flash mode, irradiation distance up to 492ft (150m). Red light provides stay on and flash mode. White light and red light controlled by 2 independent power buttons. Comfortable to wear: only 2.4oz (not include the weight of USB cable), with good flexibility and adjustable length, light angle can be adjusted to 45 degree, suitable for running, outdoor sports and more activities. Water resistance: The IPX4 rating means it is protected against splashing water from all angles. Sturdy and durable: Made of engineering plastics, can prevent functional defects of the height of 4.92ft (1.5m) drop test.