Mainstays Floating Essential Oil diffuser NIB Mainstays White and Grey Pool & Spa Floating Essential Oil Diffuser with USB Charger Run time : 12 Hours on a full charge (varies by mode selection) Can be used in your spa, pool, or even on a table top Comes with a USB charging cable Holds up to 350 mL of water 2 modes: continuous or intermittent misting Integrated warm LED lights