New Digital ultrasonic cleaner specialized in glasses,,jewelry,etc. without any cleaner just put water ... in New Digital ultrasonic cleaner specialized in glasses,,jewelry,etc.Functions: 1. The transparent top cap is ... Operation frequency: 40,000HzPower :35W On or Off: from 3 minutes to an hourExterior size: 20 *14*12 ... , Blue New Digital ultrasonic cleaner specialized in glasses,,jewelry,etc.