Package Included:1 x Stainless Electronic Digital Vernier Caliper Micrometer1 X Box1 X User Manual1 X 1.5V LR44 button CellFeatures:Electronic Digital Vernier CaliperMeasurement in both SAE (inch) or Metric (mm) with conversionZero setting in any positionMeasurement types: internal dimension， external dimension， depth and stepsMade of hardened stainless steelLarge LCD DisplayWith a small locking thumb screw which locks the jaws in placeAutomatic turn-off functionMeasure range: 0-150mm/ 0 - 6"， 0-200mm/ 0-8"， 0-300mm/ 0-12"Resolution: 0.01mm/ 0.0005"Accuracy: ��0.02mm/ 0.001" (<100mm)， ��0.03mm/ 0.001" (>100-200mm)， ��0.04mm/ 0.0015" (>200-300mm)Repeatability: 0.01mm/ 0.0005"Max. measuring speed: 1.5m/ sec， 60"/ secMeasuring system: Linear capacitive measuing systemWorking temperature: 41 - 104��F (5 - 40��C)Power Supply: 1x 1.5V LR44 button Cell (Cell is included)