The County Comm GP-4L is the smallest shortwave radio in my collection. It is a Degen DE202 with an added LED, which can be used as a simple flashlight.
Here's a photo of the radio's insides:
* The logic board has a label saying "NOTE: 0.8mm / THE THICKNESS IS 0.8mm"
* The speaker has a plastic cone, like cheap headphones
* A spring provides contact between the band switch and the outer casing, perhaps for grounding