1. Retinoscope with ophthalmoscope two poles, two rechargeable well.
2. The filament can be 360D rotated and upward and downward moved
3. Quickly and precisely measure the astigmatism axis.
4. The light can be converged, radiated and paralleled.
5. Continuously adjustable brightness.
6. Convenient quick recharging.
7. Anti-recharging and anti-discharging function protects the battery.