Naturehike LED Headlamp is a lightweight and adjustable lighting solution perfect for outdoor activities such as running, fishing, camping, and climbing. Weighing only 52g, it features a comfortable and breathable elastic headband and a 45° adjustable angle to direct light where needed. Its USB rechargeable 1800mAh battery supports up to 31 hours of use with quick 1.5-hour charging, accompanied by a clear charge indicator. Key Features: Adjustable & Lightweight – 45° tilt angle and only 52g for comfortable wear and focused illumination USB Rechargeable – Built-in 1800mAh battery offers 2 to 31 hours runtime with fast 1.5-hour USB-C charging IP65 Waterproof – Dustproof and water-resistant with a waterproof storage box, ideal for all weather conditions Smart Detection Mode – Wave sensor lets you turn the light on/off by waving your hand for hands-free convenience Multiple Lighting Modes – Five modes including high brightness, low brightness, and red light for emergencies and various needs Battery life depends on lighting mode; weight may vary slightly depending on measurement method.