1 radiating surface,Homogeneous sounding board 2 used in ultrasonic cleaning , cosmetic and so on 3 performance: immoderate mechanical Q-value, immoderate conversion functionality 4. amplitude, Piezoelectric ceramic materials affords pleasant warmth resistance Power: 60W Frequency: 40KHz Note: Positive electrode:The terminals are clamped between the two pieces;The different is adverse electrode. Material:stainless metallic colour:Gray +Silver Package Contents: 1 x Transducer Only the above equipment content, assorted item usually are not included. Note: Light and diversified reveals could cause the color of the object in the photograph a bit of diverse from the real thing. The measurement allowed error is +/- 1-3cm.