【LED SAFETY LIGHT】250 lumens brightness: it can illuminate an area 20 meters in front of you, protecting you from potential hazards and providing safety during your night run. 【3 LED FLASHING LIGHT MODES】The running light has three modes: 1 front LED with white light: High - Low - Flashing; 8 rear LED lights with red light corresponding to the three white light modes. 【Rechargeable LED Light】No batteries needed, just charge for 5 hours with the included USB cable, allowing up to 8 hours of continuous use. Weighing only 200g, the entire light remains lightweight and does not hinder your activity in any way. 【Adjustable Strap and Comfortable to Wear】Thanks to the adjustable elastic strap, you can adjust the fit to your body size, making it easier to wear than a headlamp. The light is easy to place on the chest, freeing your hands, and once in place, it is absolutely no hindrance during your run! The light adapts to many body shapes and is suitable for both adults and children. 【Waterproof and Versatile】-- Equipped with IP65 waterproofing to ensure the light works even in fog or rain. Perfect for running, walking, jogging, and more.