The function and design of the S.A.R. Rescue-Timer were to a large extent determined by the captains in the German Maritime Search and Rescue Service. This practical orientation resulted in an robust watch able to meet any challenge. Since it was first developed, the S.A.R. Rescue-Timer has been in long-term operation on the 56 rescue cruisers of the German Maritime Search and Rescue Service. Reference M1-41-03-MB has a matte black dial and is fitted with a black rubber strap.