KaWe EUROLIGHT?« E30 Professional 2.5V Ophthalmoscope Features & Benefits: Features correction lens wheel of stages +/- 20 diopters and 1 diaphragm Click closure provides easy lockingDimmable rheostat Vacuum bulb Good and uniform illuminationVery large examination field of the fundus of the eye Specifications:Requires two C batteries (not included) or KaWe rechargeable battery Matching zippered bagColor: Silver (black accents) Product Specifications BRANDKaWe MANUFACTURERS PART NUMBER20-710-000 LENGTH INCHES7-1/4 WIDTH INCHES1 HEIGHT INCHES1 WEIGHT LBS0.70 COLOR FINISHSilver CONSTRUCTIONPlastic, Steel DESCRIPTIONEurolight?« E30 2.5V Ophthalmoscope POWER SOURCE2 C Batteries (Not Included) VOLTAGE2.5V TYPEDiagnostic Instruments PACKAGE QUANTITY1 LIMITED WARRANTY2 Years MAGNIFICATION3X LAMPVacuum