The Osram 64634 HLX is a 150W 15V MR16 lamp with a GZ6.35 base, Primary Applications: Microscope, Scientific, Medical, and Dental Applications

ANSI EFR

Product features 
• Xenon instead of krypton as the filler gas (XENOPHOT HLX versions)
• Luminous flux up to 10 % higher with same power consumption (XENOPHOT HLX versions)
 
Osram 64634 (EFR) Specifications:( Replaces Philips 6423 15v 150w)
- Mfg. Ordering Code: 54210
- ANSI Code: EFR
- Wattage: 150 Watt 
- Voltage: 15 Volt 
- Bulb Base: GZ6.35 
- Shape: MR16 Reflector 
- Type: Halogen with Reflector
- Type of Current: AC 
- Working Distance: 1.260(in) 
- Working Distance: 32(mm) 
- Average Life Hours: 50 Hours