We provide voltage customized services, specific requirements can be contacted by email, we will respond promptly.After your order is confirmed, the product usually takes 7--13 business days to arrive to your hand. Standard Measuring Charts Letters/Children/Number/TumblingE/LandoltC/Red-greenBlindness/Contrastsensitivity/Red/Green/WorthForDot/MinuteStereo/Schober/Cross/Fixation/Crossgrid/Beehive/AstigmaticClockDial/Masking/Horizontalline/Verticalline/Singleletter Technical data Display type: 19-inchTFT LED Measuring distance: 1-7m (adjustable) and can be adjusted accurately, the maximum accuracy is up to 0.1M Dimensions: 19 inch Main body: 417 long x410 high x16 thick mm Weight: Main body: 5kg Remote Controller: 0.21kg Power Source: AC100-240V + 10%, 50/60Hz Power Consumption: 25W We will try our best to provide you the best product and service, welcome to buy our product.
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