[High Quality Light] This bike light has 2 ultra-bright lamp beads with 1200 lumens. Large lighting area and visible distance up to 600 feet. The upgraded frame supports 360 horizontal rotation and more visible space than other LED bike lights. [Intelligent LED Display] LED screen displays lighting modes and corresponding battery level. The LED display shows 99 instead of 100 when fully charged and is reduced by 10 each time it is used, for example 99908070. The cyclist will be constantly informed of the status of the bike's lights, which will prepare you well for a continuous journey. [USB Rechargeable & Power Bank] This bicycle USB drive can be used as a power bank, so you can charge your phone anytime and 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 within 30 seconds. Suitable for handlebars with a diameter of 20 to 32 mm (0.79 in to 1.26 in). Our features: 360 viewable 1200 lumens of neutral white light to make every corner brighter and ensure safe travel with better visibility. 360 rotatable bicycle ring: it is more convenient to choose any angle to keep 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 rider is well prepared for the ride. Waterproof IP65: protected against splashing water from all angles. It doesn't matter in heavy rain or heavy fog. Equipped with 5 brightness modes (low medium high strobe SOS). Simply change the different modes according to your needs for the best lighting experience.