Apparently, these are ICOM devices --- you have in your head maybe like a police walkie talkie from the 80s, but these things are smaller than flip-phones, a little smaller than the palm of your hand.
Icom is a Japanese company. They make radios, including police walkie talkies (land mobile radios). The pictures I've seen look like bog-standard land mobile radios. Not particularly small, and larger than most flip phones.
