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Features:

Name: o breakout board
1. TRRS connectors are the o-style connectors that you see on some phones, MP3 players and development boards.
2. TRRS stands for Tip, Ring, Ring, Sleeve, which reflects the fact that, unlike a standard stereo connector, this actually has
three conductors and a ground.
3. Some devices use the extra conductor for a microphone (like hands- headsets) or to carry a video signal (like in some MP3/MP4
players).
4. Mini design, portable and easy to use
5. Size: Approx 1.7*1.2cm / 0.6*0.5 inch
6. Material: Plastic + metal