Optical cleaner uses ultrasonic energy 55 KHz to get objects microscopically clean. Small and economical. Operates on 110-120V AC, 50-60 Hz. Includes 5-minute timer. Wide variety of other applications include: instrument and clock parts, small geological samples, metal and plastic machine parts, small electrical and electronic components. Overall measures 8-3/4″ length by 4-1/2″ width by 5″ height. Tank measures 6-1/2″ length by 3-1/2″ width by 2-1/4″ depth; tank capacity: 15oz. Unit comes with cover and basket. 1 Year warranty. The B200 meets FCC, CE and CSA standards.