Features:

Excellent Sound Quality
Clear Phone Calls
Multi-functional Button Control
Stable & Comfortable Wearing

Button control:
Play/Pause:press once
Prev song:triple press
Next song:double press
Answer/Hang up call:press once
Reject call:double press

Specification:
Brand: USAMS
Model: US-SJ475
Name: EP-42 3.5mm In-ear Earphone
Color: Black/White
Cable Length: 1.2m
Material: Aluminum Alloy + TPE
Speaker Diameter: 10mm
Speaker Sensitivity: 92dB
Microphone Sensitivity: 43dB
Frequency Response: 15Hz~20KHz
Impedance: 32
Port Type: 3.5mm
Compatibility: For devices with 3.5mm port
Function: Audio+Phone Call
Accessory: 1 pair of middle size ear caps on earphones and 2 pairs of spare ear caps (small+large size).