Feature: High performance: high mechanical Q-value, high conversion efficiency Board radiating surface Large amplitude, Piezoelectric ceramic materials provides good heat resistance Homogeneous sounding board Widely used in ultrasonic cleaning ,medical ,beauty and so on Frequency: 28KHz Power: 100W Size: 65 Dia. x 70 H mm/2.56x2.76 inch Weight: 628g Package incude: 1x transducer