Giro - Roc Loc 5 LED black - ### Improved visibility. The Roc Loc 5 LED taillight offers an easy upgrade so that cyclists can be quickly seen by other road users. The LED light can be easily charged with a micro USB cable and is compatible with every Giro Roc Loc fitting system of the series 5. Simply plug it onto the Roc Loc 5 and the rear light is ready for use. The slim rear light does not affect the setting or the function of the adjustment system.