Product Name: SMT1230 5V SMD Buzzer SMD Piezo Buzzer 12V Piezo Buzzer Model NO.: SMT1230 Brand: Fbele Certification: ISO9001, CCC, CE WORD nChannels: 5.1Channel Usage: Expand Volume Radiation Mode: Direct Radiation Type Style: In-ear Transducer Principle: Electrostatic Earphone Cone: Polypropylene and Titanium Edge Transmission Mode: Bone Conduction Category: Buzzer Rated Voltage: 3 Operating Voltage: 1-25 Rated Current: 5max. Capacitance at 100Hz 1V: 16000