Material: ABS  Plastic                                          

Speaker size: 50MM

Speaker impedance: 20Ω±15%

Sensitivity: 115±3dB

Frequency range: 20Hz-20kHz

Microphone: 4.0*15mm

Microphone sensitivity: -36±2dB

Microphone impedance: 2.2KΩ

Microphone directionality: omnidirectional

Wire length: 2m±0.2

LED operating voltage: DC5V±5%

Working current ≤200mA

Headphone interface: 3.5MM+4Pin                     

 Product size:20*19CM