INSIZE Digital Caliper Features include... 0-6" / 0-150mm Measuring Range 0.0005" / 0.01mm Resolution Accuracy exceeding DIN862 Buttons: mm/in, on/off, zero Battery CR2032, with one spare battery, automatic power off Data output Hardened stainless steel construction Packed in plastic box Available WITH or WITHOUT Calibration. During checkout, remember to select from the pulldown menu whether you want to order the Calipers WITH or WITHOUT Calibration. Please note WITH Calibration Caliper usually take 1 week to ship after receipt of order.