Specification Brand : ERICAT BulletPoint1 : Digital Vision Chart:The Lcd Eye Board Has A Variety Of Visual Targets: E, C, Letters, Arabic Numerals, Children'S Visual Targets, Etc. Used To Measure Vision; Red-Green Visual Targets, Cell Visual Targets, Astigmatism Detection, Color Blindness Detection, Amblyopia Training, Etc. Used To Measure Astigmatism And Color Weakness. BulletPoint2 : High Precision:Our Vision Card Usage Distance: 1-6m. And Signal Response Time: 5 Ms. In Addition, It Is Equipped With A High-Quality Remote Control And The Working Distance Can Reach 8 Meters. BulletPoint3 : Clear Writing:High-Tech Panels Are Used, Which Are Tough And Not Easy To Break. Crystal Led Lamp Beads, Luminous Uniform, Refuse To Glare. BulletPoint4 : Upgraded Design: Different From The Common Design Of The Eye Chart In Market, We Messed Up The Order Of Some Letters, Which Can Help Users To Test Vision More Precisely. BulletPoint5 : Range Of Application: Perfect Eye Care Gift For Optometrists, Eye Specialists, Ophthalmologists, Eye Care Workers, Opticians, Glasses Manufacturers, Etc, Great For Kids, Students, Home, Office And School. ExternallyAssignedProductIdentifier : 8463278189402 ItemName : Digital Vision Chart, LED Vision Test Board with Remote Control, Adjustable Screen Brightness and 1-6m Distance Adjustable, 2 Vision Recording Method and Accurate Measurement, for Optical Shops ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 26 centimeters ItemPackageDimensions_Width : 18 centimeters ItemTypeKeyword : therapeutic-eye-charts Manufacturer : ERICAT ModelName : CXCTCTmio23zwr8u ModelNumber : CXCTCTmio23zwr8u PartNumber : TY0219004089 ProductDescription : Product Information: Product Name: LED Vision Test Board Power Supply:110-240V Screen Size: 18.5in/21.5in Color: 16.7m Colors Visual Size: 413.4 X 234 Mm/ 478.8*271.3mm Maximum Brightness: 250 Cd/M2 Maximum Contrast Ratio: 1000:1 Signal Response Time: 5 Ms Dimensions: 482*30*52mm/545*405*44mm Standby Power:<2w Standard Power Consumption: 40 W/60 W Maximum Screen Resolution: 1366*768/120*1080 Screen Ratio: 1366*768/1920*1080 Usage Distance: 1m-6m Adjustable Visual Recording Method: English Fraction, Decimal Recording Method. Remote Control Distance: The Maximum Remote Control Distance Is Not Less Than 8m.