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LED Near Vision Chart
The vision chart comes with double side display:
Front side:Letter Chart as picture;
Back side:E Chart as picture.
Features:
1.LED backlight vision testing
2.Standardized and uniform illumination
3.Clearly printed optotypes
4.Double side display
5.Come with a stand, with gradient can be adjusted
6.Power Supply: Rechargeable 3.7V 1050mAh Li-ion battery.
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United States
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