Features and specifications: Product size:64*64*68mm Product material: 304 chrome steel color: silver Power: 50W Frequency: 28/40KHz frequency: provide 28KHz or 40KHz or 68KHz or 80KHz or 120KHz or 200KHz or 28/40KHz or 40/80KHz or 40/120KHz Customized Frequency, welocme OEM / ODM Main Features:Large amplitude. High conversion frequency, low heat. Output is stable. Strict advantageous control. Package included:1 x Ultrasonic transducer