Review on 🎧 3.5mm Smartphone Headset to RJ9 Adapter: Compatible with Yealink and Grandstream IP Phones - T20, T21, T41G, GXP14XX, GXP2124, GXP2120, GXP2140, GXP2160, GXP2110 by Alex May

First I was so happy to find such a product so I can use the headphones with my phone at work (Yealink T46G phone) as headphones. Before purchasing this item, I saw other reviews mentioning that people on the other end of the phone would hear their own echo. And guess what, they're right. When I tried this out with a colleague I found that they could hear me very clearly and I could hear them clearly BUT they could hear their own echo and it was very loud and distracting. I tried again to make sure it was just once, but the other person could also hear their echo, and eventually I heard their voice echo as well. I am so disappointed. I'm giving this product two starts because it's meant to be heard loud and clear; But ultimately I can't use this product with my phone at work because I can't let my clients hear that kind of echo. I initiated a return and the company responded very quickly.