●StVZO approved: YBL This bicycle light has the statutory StVZO, CE and RoHS certification and is therefore approved for road traffic by the German government. ●Built-in delay sensor: highlighted to remind the cars and pedestrians behind you when braking, so you can drive safely. ●USB charging function and practical remaining battery display: the Li-ion battery is fully charged in a maximum of four hours via the Type-C USB termination. As soon as the battery level drops below 20%, the on/off switch lights up red. ●Ultra compact and IPX5 waterproof: even on the go without a wheel, the LED light works as a practical torch. The LED bicycle front light is IPX5 waterproof and can therefore be used without problems in rain or snow. This ensures a safe ride even in poor visibility or rain. ●Easy to assemble and disassemble: no additional tools are required for installation. Installation and disassembly is easy. The silica gel effectively prevents slipping