Product description:
Retinoscope / Ophtalmoscope YZ24 set with charger base INS-11020<br /><br />The filament can be 360°rotated and upward and downward moved.<br />Quickly and precisely measure the astigmatism axis.<br />The light can be converged, radiated and paralleled.<br />Continuously adjustable brightness.<br />Convenient quick recharging.<br />Anti-recharging and anti-discharging function protects the battery.<br />Can also be connected with the head of ophthalmoscope.<br /><br />Metal case included<br /><br />Working Distance 0.67m<br />Streak 3mm-20mm<br />Illumination Source 3.5V/2.8W halogen bulb<br />Streak Rotation 360°<br />Input Voltage AC220V±22V/50Hz±1Hz / AC110V±11V/60Hz±1Hz<br />Power(Main Body of Ophthalmoscope) Li+ battery pack DC:3.7V<br /><br />Specifications:<br />Dimensions: 11 x 8 x 4 in / 27 x 20 x 10 cm <br />Weight: 6 lb / 3 kg