Product Overview SPECIFICATIONS: Volts : 3 Watts : 2 Shape : TL1.5 Lamp Base : Single Contact Tapered Lamp Length : 17mm Finish : Clear Lifespan : 25 Hours Rated Average Life Lamp Type : Halogen PART NUMBER REFERENCES: 03400, WA-03400-U, WA03400U, BO03400, CA1313, CL1313, 1313 COMPATIBILITY: Welch Allyn 21110 Otoscope 21111 Otoscope 22840 Otoscope 24000 Otoscope 24011 Otoscope 24020 Otoscope 24031 Otoscope 27200 Illuminator 27200 Illuminator 27250 Illuminator 41110 Transilluminator 73550 Handle Adapter PocketScope