Add bright accents to your night bike rides with CALIDAKA. Each light is equipped with 12 LEDs with 7 colors and 15 flashing modes, and 360° visibility contributes to maximum safety. Motion sensor supports automatic activation at start of movement and deactivation after 30 seconds of inactivity. Also provides manual mode which offers instant response. Two-component body possesses water resistance and is compatible with nearly all types of bicycles with hub diameter up to 1.26 inches