[High Quality Light] This bike light has 2 ultra-bright 1200 lumens lamp beads. Wide illumination range and visible distance up to 600 feet. The upgraded frame supports 360 horizontal rotation and more visible space than other LED bike lights. [Smart LED Display] The LED display displays the light modes and the corresponding battery level on. The LED display shows 99 instead of 100 when fully charged and dims by 10 with each use, e.g. 99908070. continuous journey. [Rechargeable by USB & Power Bank] This bicycle USB drive can be used as a power bank, allowing you to charge your phone anytime, anywhere. The built-in 5200mAh battery provides long-lasting power and can be charged via USB. [Easier to install] No tools required. Just install and remove in 30 seconds. Suitable for handlebars with a diameter of 20 to 32 mm. Our features: 360 visibility 1,200 lumens of neutral white light to illuminate every corner and ensure safe travel with better visibility. Ring 360 rotatable bicycle rack: it is more convenient to choose any angle to ensure your safety at night. As a power bank function, you can charge your phone anytime, anywhere. LED display: the display shows the status of the bike's lights so that the cyclist is well prepared for the ride. Waterproof IP65: protected against splashing water from all directions. In heavy rain or heavy fog, it doesn't matter. Equipped with 5 brightness modes (low, medium and high strobe SOS). Easily change the different modes as needed for the best lighting experience.