Speaker: Size: 36mm (1.42 in Inches)
SPL: 140dB + / - 2dB Frequency: 420Hz -20kHz
Impedance: 8 ohm + / - 15 percent
Audio: 1W
Microphone: Type: omnidirectional
Frequency: 100Hz – 160kHz
Sensitivity: -54dB + / - 2dB
Impedance: 2.2K ohm
Voltage: DC 1 - 10V
Product Weight: 5oz (135g)
Product Size (L x W x H): 3 x 2.25 x 1.25 inches