This is a single Ozone Facial Steamer . The steamer includes the ozone function to help steam and sterilize the face. The steamer has two switches, one to activate the power and the other to activate the ozone. This Steamer also has a timer and an automatic shut-off function when the water level gets too low. This unit is easily adjusted up and down and it is on a study caster case for easy movement around the spa. The magnifying lamp is a 5 diopter magnifying lamp. There is a 37" extendable arm making this piece fully adjustable to meet your workspace needs.