DESC: Features:Halogen light for true tissue color and consistent, long-lasting illumination.12 aperture/filter combinations for greater versatility: micro, small, and large spot sizes, cobalt blue filter for corneal exams, fixation target, and slit aperture (all on a 6-position aperture dial).Plus: red-free filter and unfiltered halogen on a 2-position filter switch--each position can be engaged with each of the 6 positions of the aperture dial.48 focusing lenses for better resolution; Red-free filter may be used with any aperture.Rechargeable battery for long-lasting illumination.Product Information:The Welch Allyn 2.5v PocketScope with Handle and Rechargeable Battery (Model 12800) offers quality in a convenient pocket-size set. Key Components: 2.5v PocketScope Ophthalmoscope (without Handle) 2.5v Halogen Lamp 2.5v PocketScope Ophthalmoscope with AA battery handle 2.5v PocketScope Ophthalmoscope with AA battery handle in soft carrying case Warranty: Welch Allyn will repair or replace, fr