Recommendation: Small, IP-rated mic/speaker for ground vehicle?

What do you guys recommend for 2-way audio on fielded robots? I don’t need a ton of output volume, as the system will primarily be used for communicating with humans in close proximity to the mic/speaker. I do, however, need the mic/speaker to be ruggedized to some degree and allow for contact with a variety of environments (moisture, sand, etc).

submitted by /u/ImHiiiiiiiiit
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