It comes with a low-battery indicator and lithium-ion battery technology that has no memory effect
It has a soft grip rheostat intensity control and AC charging module with retractable prongs that is easily removable from the handle
Key Components: 3.5v Coaxial Ophthalmoscope Head with Halogen Lamp (Model 11720) 3.5v MacroView Otoscope Head with Specula and Halogen Lamp (Model 23810) 3.5v Lithium-Ion Handle with Removable AC Adapter (Model 71900) Hard Case for 3.5v Set
Reusable Polypropylene Diagnostic Otoscope Specula Set of Four (2 3 4 5 mm)
The Welch Allyn Warranty: Welch Allyn will repair or replace free of charge any parts of its own manufacture proven to be defective through causes other than misuse neglect damage in shipment or normal wear