Sports EV 119 Neck Stereo Headphone

Speaker Size: 10 MM
Sensitivity: 96 +- 3db at 1khz 0.5v rms
Frequency response : 20HZ : 20000 HZ
Plug Type: 3.5 MM
Microphone
Dimensions: 4*1.5 MM
Sensitivity: 42 dB+/-3Db
Frequency response: 30 : 16000 HZ