It's enough to have the ability to turn off audio. That's useful for restroom breaks, but also for when officers are not interacting with the public, since the

It's enough to have the ability to turn off audio. That's useful for restroom breaks, but also for when officers are not interacting with the public, since they should have some privacy for cooler talk (well, maybe they should, or maybe they shouldn't, but I've not thought enough about that myself).