Product Overview SPECIFICATIONS: Unit : 1 Volts : 3 Watts : 3 Shape : T2 Finish : Clear Lifespan : 25 Hours Rated Average Life Lamp Type : Halogen PART NUMBER REFERENCES: 03800, WA-03800-U, WA03800U, BO03800, CA1742, CL1742 COMPATIBILITY: Welch Allyn : 11800 Panoptic Ophthalmoscope11810 Panoptic Ophthalmoscope11820 Panoptic Ophthalmoscope