It was a pair of 'Oregon Scientific TP380' I figured since it was a 2.5mm pin it would fit, but unfortunately it doesn't function properly, I'm convinced it's the radio as they're only cheap and are generally just *suitcase*.
I ordered 1 bowman and two swimmer headsets the other day for me and a few mates, i'll be sure to compare the two when I receive them. Hope I don't get a lemon :/
Don't know if its the same but I have the Star AG36 I assume its similar/same as the CA. You can fit a mini in there, with a bit of wiggling, I managed to and after you do it a couple of times it gets easier.