BUILT IN 1500 MAH RECHARGEABLE BATTERY: Up to around 12 hours runtime in white light, and around 3 hours on high brightness. Red light is more energy saving with up to around 30 hours runtime. The red light mode is particularly good for outdoor activities at night as it does not disrupt wildlife. Waterproof: Compact and powerful USB battery offers several hours of operating time. There is no need to change batteries. It is very convenient for you to simply charge it with the USB cable. High waterproof grade, can survive heavy rain and any impact in common outdoor activities and work conditions. 6 modes and motion sensor function: Soft digits headlamp has 6 lighting modes, design four-speed battery display screen. Simply wave your hand in front of the headlamp to turn the light on or off when it's on Sensor Mode. Safety and Ultralight: Provide 90-degree adjustable head tilts reduce neck fatigue for optimal comfort. No overheating after hours of use with light weight. Multifunctional Applications: Extremely suitable for night walks, running, cycling, hiking, camping, climbing, fishing.(Notice: The multifunctional version is detachable.) Specification: Material: ABS Plastic Size: 60x40mm/2.36x1.57inches Weight: 80g Package Includes: 1Piece Motion Sensor Work Headlamp 1Piece USB Cable Note: Please allow 1-2cm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you