Costa is a stylish diffuser with a trendy look. Advantages Operates via a power outlet Diffuses a fine cloud of fragrance without heat, chemicals or pumps. Requires only tap water. Diffuses the benefits of essential oils. Humidifying power. Diffuses for 6 hours continuously. Automatic shut-off. 7 different lighting colors Creates a warm atmosphere Instructions for use Fill the diffuser with water up to the line and put 3 to 8 drops of your favorite Naturist essential oil. Press the diffuser to turn it on and enjoy the benefits of aromatherapy at your fingertips.