The build quality is ok, it fits well into the thread and is surprisingly small and compact.
Unfortunately, I have no direct comparison more for 25 watt incandescent lamp, but:
- The light of this LED lamp is really warm white.
- The viewing angle is also true.
- The specified 240 lumen I must doubt. The light output is in any case lower than with the 25 watt incandescent lamp. Not dramatically - but visible.
Overall, still 4 stars, because of the very reasonable price. For my application, the low brightness is sufficient, and as it burns 4 hours per day, already paid for itself all in less than a year.