I just saw these from Kenwood:

Kenwood - PKT-23K



You can get them for about $145 on Amazon. They have 4 channels that are programmable and it's 1.5W of UHF so they'd be good for probably 5 miles line of sight. They are around the size of a credit card and weigh 3.9 ozs. I haven't looked into the frequencies they are pre-programmed for and I'm going to check with my radio provider to see if they can be programmed for other GMRS frequencies. I've done that with some other business band radios I have where I programmed some of the unused channels for GMRS (we have a GMRS license - anyone can get one) that we then use for skiing in the mountains.

I believe Kenwood has, or is readily available from third parties, an earbud speaker/mike. Probably could get something to work with a standard bluetooth headset.

That looks pretty attractive to me.

J.