PRYMEMAX™ BTH-550-MAX Wireless Speaker Microphone with Desk-Top Charger, Rotary Volume Control for 2-Way Radios, Cellphones and Tablets with Bluetooth (iOS or Android), Works with Most PTT (PoC) Apps

Bluetooth worked good, transmission seemed to be okay. But reception was terrible. Sound was choppy and would pause in and out and it sounded like you were in a tunnel.Cordless option was great idea, but switched back to corded so I could understand what people were saying.

Expected a larger product, with better audio. Returned item.

The instructions sent with unit were for BTH-600 Mic. So there was some confusion on setup and use. I could get PTT mic to work ok with Zello on Android phone. But, when paired to btech I could not get PTT to work. I can hear audio through mic ok. Despite trying two different call/voice modes on BTECH GMRS PRO. The sizing is also small. If this would of worked with my handheld. I may have considered getting the 600 model instead. It has usb C charging and a larger to grip mic. This mic uses dock or older usb for charging.

The push to talk feature is not responsive/intermediate with my iPhone 13 Pro Max when using with Zello. All other aspects, the speaker phone/listening to music works fantastic! The battery life is exceptional, too...Overall, for my use, unfortunately it's not up to par, being I really wasn't seeking a speaker for music nor for my phone... I really needed it to work with Zello....

This is really cheap feeling and does not even sound good, I was pretty disappointed with it and whould not recommend it, the price seems way overpriced

Works pretty good. Sound quality is on point.