Product Name: Ultrasonic Atomizing Transducer (AW11Y25200A)Place of Origin: ChinaFeatures: 1) Thick resonant frequency:1.02+0.05MHZ 2) Resonant impedance: 3) Static capacitance (pf): 2500+- 20% 4) Electric-mechanical coupling coefficient (kp): >=0.53 5) Fog output: 350ml/H 6) Life span: 5,000h 7) Applications: inhalators, medical nebulizers, cosmetic treatments, humidifiers, atomizers