Yes, it is halogen- Philips EcoVantage Indoor Outdoor PAR30L "bright light" dimmable flood.
So, I never knew how many different types of flood light bulbs there were!!!
Wattage? I think 53? What it says on the package is "53W = 75W". As a former engineer, I have to say, I do not understand. Is it 53 W, or 75???? Whatever-
what I was looking for was the highest color temperature I could find- this one is 2900K. And 920 lumens. I think in these terms, color temp and lumens. How that equates to temp, well, that's another thing! I think with the new reflector, and lowering the potential basking spot, I may still get there with this bulb. But.... we'll see!