The Tapo L510E bulb is a great bit of kit.
I purchased this bulb, as I was looking at getting a light up alarm clock, for the dark winter mornings. I didn't buy one, as they were so expensive, and I only wanted the light function...I didn't need DAB, bluetooth etc etc.
I read around, and some people recommended using smart bulbs as an alternative, hence me purchasing the Tapo bulb.
It's been working really well, however, it can be a bit of a choir to set it up for my morning wake up. It also not a smooth wake up, as you have to set the light to come on in brightness incroments, which is can be quite jerky.
I think it would really be a benefit to the product if it had a wake up mode i.e. set it to light up gradually 30min before you want to wake up, with smooth brightness transitions to your final wake up brightness. This would then make the bulb and ideal alterntive to the crazyily expensive light up alarm clocks.