3 LIGHT SETTING: Slow flash, quick flash and steady glow (Easy push button). RECHARGEABLE MINI USB: This item equipment with a rechargeable line. EASY TO CONTROL: The LED flashing tube can be set to flashing or light continuously by means of touch switch. DURABLE & TOUGH: The whole plastic tube part can be rub, extrusion in any shapes which won’t affective the light of this collar.