The Retevis Adjustable Throat Mic Earpiece, with its 1 Pin 3.5mm jack, is meant to work with most phones, computers, and other devices that have a 3.5mm audio port. According to the manufacturer's description, it's designed for low-profile communication, picking up sound through the throat instead of a regular mic, which can be handy for quiet activities or when you need to avoid background noise.

When it comes to using this throat mic with apps like Zello, feedback seems mixed. Our research indicates some folks think it works well, mentioning that it's comfortable and does a decent job, especially if you pair it with other audio accessories.

So for regular conversations, especially in quieter settings, it should do okay with Zello.

On the flip side, there are reports of issues with audio quality. People have pointed out that volume can be low and the mic sometimes inconsistent. So, if you're in a noisy place or need really clear sound, it might not meet your expectations.

Some have found it tricky to get clear audio in loud environments or when high-quality sound is crucial.

In short, if you're looking for something for casual use or in environments where noise isn't a big deal, it could work fine.

But if you often find yourself in noisy places or need top-notch audio clarity, you might want to check out other options. Think about your communication needs to see if this mic fits the bill.