Metal handsfree earphone for iPhone

Metal bullet head for durable use
Microphone can be controlled by on-and-off button directly
With microphone
Available colors: black, silver, pink, blue, green and orange
Good price and high quality 

Specification:   
                                                                                     

Speaker: Φ10MM

Frequency range: 20Hz-20KHz

Impedance: 32Ω

Sensitivity: 110dB±3dB

Max power input: 5mW

Mic: -58±5Db