The Street F-500 and Avenue R-45 bike lights offer multiple modes, including day and night flash modes, steady light intensities, and an economical flash mode. Both lights are fully USB-rechargeable, so no batteries are needed. The Street F-500 has a battery life of up to 24 hours, and the Avenue R-45 up to 12 hours. Thanks to the memory function, the lights turn on in the last used mode. If the battery level drops below 10%, they automatically switch to the lowest setting. Built-in battery indicators clearly show the charging status. Street F-500: modes – high, medium and low steady light, day and night pulse, and economical flash Avenue R-45: modes – high flash, low steady mode, day and night pulse, and economical flash USB-rechargeable – no batteries needed Usage time: up to 24 hours (Street F-500) and 12 hours (Avenue R-45) Power saving: at 10% battery or less, the light switches to the lowest setting Memory function: light turns on in the last used mode Kryptonite Item Number: 738937 EAN code: 720018004523 Retail packaging: Yes