ADC Standard 2.5v Instrument Set features:

Ophthalmoscope head with lens wheel features 24 corrective lenses from –25 to +40 diopters
Otoscope head with removable 3x magnifying lens, and insufflator fitting
Bayonet head locking mounts for secure connection to the battery handle
Welch Allyn disposable polypropylene ear specula in 2.75mm and 4.25mm sizes are convenient, safe, and economical
"C" cell powered battery handle with rheostatic on/off switch
Auto-clavable, polypropylene ear specula in 2.5mm, 3.5mm, and 4.5mm sizes
Adapter to allow use with Welch Allyn or compatible disposable specula
Complete in zippered case with fitted insert that is scuff and scratch resistant and cleans easily
Weighs 20 oz.
Inspected, assembled, and packaged in the U.S.A. from foreign components
Batteries NOT included
Ophthalmoscope meets or exceeds ISO 10942, ISO 15004-1, and ISO 15004-2