Of course they're non-functional. It's a cheap transistor radio. It's got a wheel switch for on/off/volume and a wheel for tuning. What would the buttons and d-pad even do?
That's what I'm saying! You can clearly see the real controls off to the side of the device. No effort was put into this thing. It was literally slapped together using off the shelf parts and a simple mold.
Would it have killed them to have used a basic digital tuner, and made the D-Pad function as tuning and volume at the very least? At least then they could have misleadingly marketed it has having an LCD display. But they couldn't even bother to do that.