Parameter: 1.Measuring range:3mmHg-70mmHg 2.Precision: ±1.5mmHg(3mmHg≤IOP≤25mmHg); ±2.5mmHg(25mmHg<IOP≤70mmHg ); 3.Measurment Mode:Both vertical and horizontal measurement 4.Output:Wireless Infrared Thermal Printer 5.Easy to Use 6.Small Size,Easy to Carry 7.No need Anesthesia, No Discomfortableness