Wattage: 300W
Lumens: 5500
Radiant Output: 75W
4W UV <390nm Output
Color Temperature: 5900K
Light Engine: Ceramic Xenon
Reflector: Parabolic
Y1911 is the exact same lamp. One number is for Pentax and the other is for aftermarket distribution.
Alternate Part Numbers: Y1964, ME300C-10F, Y1911, OL-X28, L-X29
Pentax
5000, 5010, 7000, 7010 Processors
EPK-I 5010
ROL-28, ROL-X28
Smith & Nephew
500XL