Fast Charging & Long Runtime The special two-port USB-C charging cable supports fast charging which can fully charge the headlight in just 2 hours and the taillight in 1 hour. Meanwhile, our bike lights for night riding can work for up to 4 hours at the highest brightness and 19 hours at the lowest brightness by virtue of the 2000mAh built-in battery. The rear bicycle light can last for up to 50 hours with the 350mAh rechargeable battery.IP65 Waterproof & Shockproof Our bike lights front and back boasts a premium aluminum alloy casing for superior texture, excellent heat dissipation, resistance against shocks, and tough enough to withstand 5ft drops. Furthermore, the IP65 waterproof function can protect the bike light well even in heavy rain.Multiple Application Scenarios Due to its lightweight and portable design, our bicycle lights are not only ideal for cycling, hiking, and camping, but also suitable as handheld emergency flashlights. Whether you're exploring outdoors or finding your way in unexpected situations, it provides reliable illumination and ensures your safety.8+7 Lighting Modes bike lights offer 8 (headlight)+7 (taillight) various lighting modes to meet different illumination needs, including high, medium, low, and several flash modes. Please note that there are three different ways to adjust the lighting modes of the headlamp: single-click, double-click, and long-press. The detailed instructions for using the bike light on the user manual for your reference.Super Bright & Wide Coverage 1000 Lumen super bright bike headlight creates a focused and powerful beam pattern, visible up to 650 feet, evenly illuminates from your tire all the way to where your eyes are looking. Additionally, eight auxiliary floodlights enhance penetration and provide a wider coverage area, ensuring optimal visibility even in challenging weather conditions like heavy fog and rain.