'Invisible' Light flicker

I recently bought 2 Yeelight Color bulbs (not the 1s Version) and I noticed they have a slight flicker, even at full brightness. I suppose this is a result of PWM dimming? There is probably nothing wrong with them, however I would like to know if the white Version and the 1s Version have this too.

Yes please, anyone knows? I’m planning to buy 1s rgb (or white only if it is needed to avoid this…), do they show pwm flickering? I’m sensitive to pwm