1 radiating surface,Homogeneous sounding board 2 used in ultrasonic cleansing , beauty and so on three performance: high mechanical Q-value, high conversion performance 4. amplitude, Piezoelectric ceramic supplies affords nice warm temperature resistance Power: 60W Frequency: 40KHz Note: Positive electrode:The terminals are clamped between the 2 pieces;The diverse is detrimental electrode. Material:stainless steel colour:Gray +Silver Package Contents: 1 x Transducer Only the above package content, different item aren't included. Note: Light and diverse displays may cause the colour of the object in the picture slightly assorted from the real thing. The measurement allowed error is +/- 1-3cm.