Keep your otoscope ready for exams with the Welch Allyn Halogen bulb 3.5V (WA03100). This replacement lamp delivers the correct 3.5V halogen illumination specified for compatible otoscope heads. Supplied as a single bulb, it’s designed for routine maintenance and quick swaps when a lamp reaches end of life. Ideal for clinics that rely on consistent otoscope performance across everyday ear examinations.