The Karoshi K-011/OS-01 is a limited edition of 99 pieces introduced in 2018. It features an integrated movement / case construction, with the baseplate of the movement in combination with two sapphire glasses serving as the case. It is attached to the wrist through a one-piece rubber strap, which wraps around the casing. Both the strap as well as several other components can be customized upon the owners request.
