Homedics Diffuser Homedics Healthy Home Scenting Ultrasonic Aroma Diffuser. Delivers a fine mist of natural aroma, has 7 LED color options, offers up to 5 hours of continuous runtime or 10 hours intermittent, has a 180 mL capacity, produces a strong mist, and features an auto-shutoff function. Designed to enhance mood with essential oils and alleviate dry air. 7 LED color options. 180 ml capacity for long-lasting scent. New