Heavy Duty PRYMEBLU® Bluetooth Wireless PTT, Waterproof IP67 Rated, Works with ZELLO, Wave Communicator, ESChat, Unity, Streamwide and Many Other PoC Push-to-Talk Apps (BT-PTT-Z-HD)

Works pretty well. Bought this specifically to use with Zello. Each time you open the app, you tap the button once to pair it, and then either use it as a PTT button or to toggle the mic on and off. Since I use my phone for Google maps while in the car, I hate having to switch to the zello app to talk, but this button makes it easy. Just velcroed it to the inside of my steering wheel and now Google maps can stay up the whole time.Great product. Only con: limited range.

Just quit working in less than 2 months. Replaced battery so that is not it. Turned it off and on. Nothing. No longer connects.

Picked this BT-PPT Button to use with Zello and it works well, Once in while you have reconnect the button to the phone but its a great product. I no longer have to have Zello open to talk with other users.

I used it for my I Phone with Zello, and it only works part of the time. Would not buy another tell some improvement are made.

Really simple design and minimalistic. I purchased this so that I can use a walkie-talkie style app on my phone while cycling. Using a bluetooth earpiece I wasn't able to engage the app to talk so I got this button.There are no lights to indicate that it is on or connected to your phone. When you unscrew the button from its base there is a little switch to turn the device on. The paperwork states it should last a year depending on use. I turned the switch on and am just leaving it like that to see how long it lasts.The little strip of velcro that it comes with makes install easy and you can put the button wherever you need for ease of use.Everything says it is for iOS only, that is not true. This button can also connect up to Android phones and work the exact same way with the same programs.