Product Name: TPV800 Portable Vision Screener Handheld Portable Autorefractometer Autorefractor Model NO.: TPV800 Customized: Non-Customized Application: Optical Shop Type: Ophthalmic Refractometer Keratometer Trademark: SHTOPVIEW Origin: Shanghai HS Code: 9018500000 Product Description TPV-800 Portable Vision Screener Handheld Auto Refractometer Refractor 2020hot saleAmazing Features:1.Binocular Detections,can test boths eyes at the same time2.focus-measurement-calculation-result ,less than3 seconds!3.ultrasonic ranging & auto focus screening is performed from1 m away.4.Wifitransmission print reportTechnical data:Operation mode:Bino/monoOptometry:AutomaticDS:Range, -7.50E7~+7.5D,Resolution : 0.25D0.01DAccuracy:+/-0.50DDC:Range 0.00D-3.00D ,Resolution 0.25D/0.01DAccuracy:+/-0.50DAxis: Range:1°~180° Axis: Range: 1°~180°Resolution:1° Accuracy: +/-5°Pupil size:Range. 4.0 mm-9.0mmResolution:0.1 mm Accuracy.:+/-0.1mmPupil distance:Range:35mm-80mmResolution: - 1mm , Accuracy: +/-1 mmGaze:0°~20°Measuring distance:1 m+/-5 cmTime per measurement :~1sFixation target:Light flash. attractive soundData Interface:Wi-Fi, USBPrinter Interface:USBBattery:Rechargeable lithium batteries. 6 hours of duration,ReplaceableSize:180mm*130mm*110mmDisplay:5 inch touch screenWeight:0.8KgOptional accessorles:camera tripods, printer, etc