They are bright, a perfect color, and look great in the light fixture. As you dim a fixture, the light usually changes to a warmer (more yellow) shade. They were encased in foam to eliminate touching another bulb or moving during shipment.

The product description for the 60w 4000k bulb is misleading. It says the bulbs are both 4 watt and 6 watt. A 6-watt led bulb is about the equivalent to a 60-watt incandescent bulb.

Cotanic's claim of a three-year warranty is empty. No response from manufacturer. Was contacted by provider and issued a refund.