Review on 🎧 Vest EMF Protection Air Tube Headset with Earbuds, Built-in Microphone & Holder (White) - Radiation Shielding Certified by Sally Reynolds

Addendum: The wire foot at the connection point with the socket did not withstand the daily wear and tear, it loosened a little at first, the inner wire peeked out a little through the outer coating. For example, when most wired accessories start to break, they will work if held in that position, but will eventually fail. Major failed. These headphones would have been great if that connection was more secure and protected, despite aiming for a flat alternative. Hope they improve. Let's get back to the original headphones. Back: So far, so good. The block I received is correct. Wish controls were compatible with all standard iPhone functions. What do I and N mean on the control switch? The manual doesn't mention it as far as I can tell.