Ophtalmoscope 14 Lumen, 2x AA Battery (in a case)

FEATURES
-Coaxial Parallel Light principle
-Luminance – 14 Lumen
-2 x Alkaline AA batteries
-5 different apetures
-19 kinds of adjustable corrective lenses, Range of lenses: – 20d – +20d
-Standard Handle, handy and convenient
-Operation Temperature: 10°C – 35°C
-Humidity: 30% – 75%
-Air Pressure: 700hPa – 1060hPa