One look at this instrument/tool watch and it’s not a surprise that the Mühle-Glashütte S.A.R. Rescue-Timer has been equipping the maritime rescue workers of the German Maritime Search and Rescue Service (DGzRS) since 2002.

One of its key virtues is the ability to easily read the time during night rescue missions. On-board lighting on sea rescue missions is typically kept at a minimum to allow night the best night vision possible while at sea. The S.A.R. Rescue-Timer features over-size hands and indices fully coated in layers of SuperLumiNova to shine the time even in pitch-black conditions.

The new version of the Mühle-Glashütte S.A.R. Rescue-Timer Lumen takes its name from that same luminosity now on the entire dial, providing a bright backdrop for its skeleton black hands.

Built like a tank and equipped with an impressive 4mm-thick scratch-resistant sapphire crystal, the 42mm stainless steel case features a screw-down back and crown with a confirmed, superior water resistance rating of 1,000 meters.

Three strap options are available to hold the watch in place including the popular rubber, dressier stainless, and now a fabric strap sporting the colors of the watch.

Inside beats a Sellita SW-200 regulated in six positions and customized with a woodpecker neck regulation system to achieve a 0 to +8 seconds per day rate. This is a slightly different chronometer standard that allows for a bit faster running – but never slower as compared to the typical Swiss -4 + 6 COSC standards. Price: $2,499. Available at  www.oldnortheastjewelers.com.