The Serene House Ranger Ultrasonic USB Aroma Diffuser is a compact plastic ultrasonic diffuser for targeted scenting in treatment rooms, reception areas, and staff spaces. Measuring 2.76 in W x 4.72 in H x 2.76 in D, it runs up to 3 hours continuously or 6 hours intermittently on USB power, supporting flexible use at desks, in offices, dorms, or during travel. Operation is simple: add water and essential oil, power via USB, and select the desired mist mode to provide a cool mist output that supports consistent ambient fragrance without open flames or heat, suited to spa and clinical environments. Read more