If you’ve used the Zello app on your phone before and need a dedicated device to use Zello, then this is the device for you.
It has only one Zello app, Android 5.1, no other apps can be downloaded. It has all the features you need, WiFi, Bluetooth, GPS, 3G/4G network.
If you haven’t used Zello before, you may need to spend a little more time researching how to use it.