Cheap but not the best.

Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

I have installed two of these bulbs on my car for lighting the back licence plate.
After one week one of them was not lighting anymore so I have replaced back the old normal bulbs.

Very low price and tough build.

The build looks OK. The inner parts does not move in the cover glass at all.
I will keep on testing led bulbs in the cockpit of my car.
If your car is CAN-bus equipped then it will be flashing like other led lights when they are switched off but still under power.

Maybe I just received a factory default one as the other bulb still does it's job.
You must be sometimes lucky with led lights.