This is a bisque ceramic item that allows you to easily enjoy your favorite essential oils without using fire or electricity. It's perfect for subtly scenting your surroundings, such as your desk or bedside. ◎ How to use: Place the main unit on the included tray and directly apply 5-10 drops of essential oil to the indented area. The absorbed essential oil will gradually evaporate, slowly spreading the fragrance. When the scent weakens, add more of your preferred essential oil. Stone: Approximately 65mm diameter x 30mm Tray: Approximately 63mm diameter x 5mm Weight: Approximately 170g