Sengled Smart LED Light Bulbs - Dimmable


I’ve got two Sengled Smart LED BR30 Multicolor Light Bulbs integrated to Home Assistant via ZHA. The issue I’m having is they don’t seem to dim when I try to. I’ve added the “Light” card to my dashboard and nothing happens.

The company website states they are dimmable. What am I missing?

From the company website:
“Sengled Smart Multicolor bulbs are the easy way to add colorful, smart lighting to your home. Add the bulbs to a compatible hub and choose from 16 million hues, or tune white light from candlelight to daylight (2000K-6500K). Turn on/off, dim, and schedule using the free Sengled Home app or your voice. Certified with Amazon Alexa and Echo Plus, Google Assistant, SmartThings, and IFTTT.”

Thanks in advance for any help that can be provided.