The reverse of the Tag Heuer Monaco V4 Tourbillon is where the barrels that store its 40-hour power reserve are located and includes a set of rotating ball bearings reminiscent of 1970s tape cassettes

The reverse of the Tag Heuer Monaco V4 Tourbillon is where the barrels that store its 40-hour power reserve are located and includes a set of rotating ball bearings reminiscent of 1970s tape cassettes.

Read more