Ophthalmoscope head with lens wheel features 24 corrective lenses from -20 to +20 diopters. Otoscope head with removable 4x magnifying lens and insufflator fitting. Bayonet head locking mounts for secure connection to the battery handle. C cell powered battery handle with rheostatic on/off switch. Auto-clavable, polypropylene ear specula in 2.5mm, 3.5mm, and 4.5mm sizes. Complete in zippered case with fitted foam insert that is scuff and scratch resistant and cleans easily. Batteries not included.- Standard Diagnostic Set Mfr. Direct