Sound's great for classical music; mic not working
Musik, Virginia Beach, VA:
Sound is excellent, squarely in the back of my head, nicely mixed. Only problem is that I can't get the mic to work with my Pixel 3a phone or my iPad; can't talk to my Google assistant with it, can't call. Downloaded the Smart Key app, and couldn't find this model number. Really wanted to use the mic for phone calls, so will keep trying. No troubleshooting I can find so far for this issue.
 
 
 
 
 
| 
Size & Weight
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| 
WEIGHT
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0.28 oz
 | 
| 
General Features
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| 
Closed Type
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Closed Dynamic
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| 
DRIVER UNIT
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12 mm dynamic – Dome type
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| 
MAGNET
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Neodymium
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| 
CAPACITY
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100 mW
 | 
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IMPEDANCE (OHM)
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16 Ohm (1kHz)
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| 
DIAPHRAGM
 | 
PET
 | 
| 
FREQUENCY RESPONSE
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4–24,000Hz
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| 
SENSITIVITIES (DB/MW)
 | 
110 dB/mW
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| 
CORD TYPE
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Y type, flat cord
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CORD LENGTH
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3.94 ft
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| 
PLUG
 | 
Four-conductor gold-plated L-shaped stereo mini jack
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| 
WEARING STYLE
 | 
Inner ear
 | 
 
 
 
 Extra Bass Earbud Headset with Microphone
  
 Enjoy deep bass response with integrated mic and smartphone playback control.
 Overview
  - 12mm dome type driver units deliver powerful deep bass
  - Integrated microphone and smartphone playback control
  - Hybrid silicone earbuds for secure, comfortable fit
  - High-energy neodymium magnets for powerful sound
  - Tangle-free, Y-type flat cord with slider
  - Convenient carry pouch included
 
 Features
 Powerful Sound
Specially designed drivers with high-energy neodymium magnets deliver deep, powerful bass that perfectly complements today's popular music genres. 
 Bass Duct design
A tightly sealed acoustic design allows for a high level of sound isolation which aides in the reproduction of powerful and extended bass response. 
 Smartphone playback control
The integrated microphone and multi-function control button make the MDR-XB50AP the perfect companion for your smartphone. Android users can also enjoy the convenient Smart Key app for added control functionality directly from your smartphone. 
 Comfortable fit
Hybrid silicone earbuds provide long lasting comfort and designed to reduce ambient noise; x-small, small, medium and large earbuds are included to fine tune your fitment. 
 Convenient case & tangle free cable
The durable, 1.2 m flat cord reduces tangles, so you can get caught up in your music, not your cord. A convenient soft carry pouch is also included to store your new favorite headphones. 
 
 Audio
  - Driver Unit: 12 mm, dome type
  - Frequency Response: 4 - 24,000 Hz
  - Sensitivity (db): 110 dB/mW
 
 General
  - Design: Earbud headset
  - Magnet: High-energy Neodymium
  - Plug: Gold-plated four-conductor L-type stereo mini plug
  - Sensitivity: 110 dB/mW
  - Type of Use: Portable
 
 Hardware
  - Cord: 47 1/4 in. (1.2 m), Flat Litz cord Y-Type
  - Headphone Type: Earbud
  - Microphone: Elecret condenser/Omni Directional
  - Remote Control: Multi-function button / SmartKey app
 
 Power
  - Power Handling Capacity: 100 mW (IEC)
 
 Speaker
  - Impedance: 16 ohms at 1 kHz
  - Type: Closed, dynamic
 
 Weights and Measurements
  - Cord Length (Approx.): 47 1/4 in. (1.2 m)
  - Weight (Approx.): 0.29 oz. (8 g) without cord