Sengled Element Color plus E11-N1EA bulbs in the UK?

I’ve just imported some of these to try with my ST hub. However, I noticed (luckily) just before turning the first one on, that they are rated 100-130V AC 60Hz rather than the 220-240V AC 50Hz we have here in the UK. Yes, I know, I should have checked and I’m kicking myself.
So, I’m wondering if the label is just because its for US market and do they actually have circuitry for wider voltage ranges? Has anyone else got these and been brave enough to try on UK mains? Failing that, any suggestions for low cost voltage/frequency converters I could try? Thanks in advance.

I don’t think it’s worth the risk…
https://www.amazon.com/ask/questions/Tx1DTKB4OGNCCN7/ref=ask_ql_ql_al_

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Agreed. I’ve returned them.
Ordered a UK Osram Smart+ to try instead.

In case anyones interested, Sengled support said there is a UK model in development, but no release date as yet.