Product name : Handheld Vision Screener
Operation mode : Bino/Mono
Range : -7.50D~+7.50D
Resolution : 0.25D/0.01D
Accuracy : ±0.50D
Measuring distance : 1 m ± 5 cm
Time per measurement : ~1s
Data interface : Wi-Fi,USB
Printer interface : USB
Display : 5 inch touch screen
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