Perfect Ultrasonic Cleaner .. First planet friendly ultrasonic jewelry cleaner * No chemicals, just add water for a true ultrasonic clean * Energy efficient timer saves electricity .. Ultrasonic Cleaner System * Advanced sound wave technology ... Creates millions of microscopic cleansing bubbles - Automatic 3-minute cleaning cycle and auto shut-off * Bought to you by BogueSystems- The first ultrasonic jewelry cleaner. Since 1892