Challenge Tourbillon 8 Sapphire/Rhodium Mvt E00105.3986001 Automatic water-resistance cannot be guaranteed

water-resistance cannot be guaranteed

it is GPS controlled for high-speed time and time zone adjustment to 39 time zones and includes an in-flight mode and perpetual date calendar correct to the year 2100

In addition to being able to easily correct the time using the dedicated CASIO WATCHES app

The mechanism displays date

Challenge Tourbillon 8 Sapphire/Rhodium Mvt E00105.3986001 Automatic water-resistance cannot be guaranteedCvstos CHALLENGE TOURBILLON 8 SAPPHIRE RHODIUM MVT, , Cvstos CVS77620, Manual winding mechanical, Openwork tourbillon, with function: Hour, minute, with function: Small Seconds, with function: Tourbillon.