They are RadioShack 60-4027 walkie talkies manufactured around the late 1990's. They operate on a single channel on 49.860MHz and I'm assuming they put out around 100mw of power.
They have a nice little morse code feature on the front which emits a tone when pressed with a keyed PTT. They also have a long rubber duck antenna on the top.
Of course these are only a toy and probably only have a range of a couple of hundred feet but the audio is suprisingly pretty clear! There is no volume control and the PTT is lockable.
The best part is that they only cost £10 which is great for a pair of vintage walkie talkies.
Thanks for reading!
73's, Lewis M3HHY.