Material: Zinc alloy and 4CR13 stainless steel ruler

Accuracy:±0.001"/0.02mm

Resolution:0.01mm/0.0005"

With inch/mm/f conversion ON/OFF,ZERO

Inside/outside diameter,step,depth measuring

Large LCD Screen 5.7X 2.2 CM..

Battery model: Rechargable 401525 3.7V 120amh

Charging time:about 20 minutes

Usage time: When fully charged, it can be used for about

3months normally.

 Accessories: 1pc 50cm USB/TPYE-C

charging cable