It is not contain the Button Battery. DHL/UPS don't allow any Battery inside the package,so we can not put the Button Battery in the package. You need to purchase the Button Battery in your local market. Herstellernummer nicht zutreffend Marke Cloudray Plug Type No Battery（need to purchase the Button Battery by yourself） Battery 3V/3.6V, 2032 button batteries Measure Range 0-200W Tolerance ++++ /- 3% within the central section Used for CO2 Laser Tube Display 4 numeric LED display .
eBay