Current limiting resister for Glowing Berries?

Just bought an awesome Blue Glowing Berry.

I’m not sure whether it has built-in current limiting resistor.

If I apply 12V for a brief period of time, the blue light is impressively bright to my liking; If I put a 1k resistor, the blue light is no longer that impressive. But I am not sure whether I can safely apply 12V to it without the current limiting resistor for extended period of time.

Any idea?

Have a great weekend.

12V power supply is the best and safe way to make it work.

Hi Albert,

Good to know that. No resistor is needed.
Now I can enjoy the beautiful light without fearing that it would be blown in the longer run.

Thank you.