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Welch Allyn 3400-U Bulb Authentic Welch Allyn 3.5V bulb, code 3400-U.
Suitable for the W.A Pocketscope 2.5V Otoscope.
Each bulb is specifically designed as an integral part of Welch Allyn instruments, based on the following parameters:
Stick to using authentic Welch Allyn bulbs and spare parts to ensure the proper performance of your diagnostic tool.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.