1.Otoscope head made from polymid
2.Magnification:2.5x
3.Fiberoptics for cool
4.Easy to use
Otoscope Magnification : 2.5x distal dia : 2.5mm,4mm Bulb : 2.5V1.6W halogen lamp Batteries : two "AA" batteries or two "AA" NiMH Rechargeable Battery pocket instruments a complete range of quality diagnostic instruments