Feature：

	Quickly and precisely measure the astigmatism axis. The light can be converged, radiated and paralleled.

Specification charger case

Bulb:3.5V/2.5W Halogen Bulb 
Power:

Charger：AC100-240V 50~60Hz 
Retinoscope：DC3.6V li batteries 
Input Power：10VA 
Li+ Battery：CGR18650C 
Fuse：51S-0500H 

Working Condition 

1.Temperature 50C~400C 
2.Relative Humidity:30%~75% 
3.Atmospheric Pressure:700hPa~1060hPa 
4.Power:Charger:AC100-240V 50-60Hz 
Retinoscope:DC3.6V Li Battery