A choice of convenient rechargeable power sources that fit all our 3.5 V instrument heads.

Welch Allyn website for more information on the 3.5V Nickel-Cadmium Rechargeable Handles: https://www.welchallyn.com/en/products/categories/physical-exam/power-handles/3-5-v-nickel-cadmium-rechargeable-handles.html