Marathon 36mm Arctic Edition Medium Diver's Automatic (MSAR Auto) Watch Commonly known as the Medium Search and Rescue Automatic (MSAR Auto). The MSAR Auto matches the features of the GSAR but with a 36mm case.  Marathon Search and Rescue (SAR) watches were developed to Canadian Government requirements for use in SAR operations. Built to withstand extreme conditions and match the capabilities of the user. First introduced in the early 1990s, they are still in active use today. Overbuilt bezels for manipulation with gloved hands; low-light illumination for use in night missions; screw-in crown and O-ring system for 30ATM water-resistance; high-torque pinions connecting movement to hands; Incabloc™ shock absorbers on all automatic movements. Powered by Swiss-made automatic or quartz movements, the SAR diver’s watches are available in 36mm, 41mm, and 46mm case sizes. Movement:   Sellita SW200 with Incabloc™ Shock Absorber No of Jewels:   26 Scale Quantity:   2 Scale Range:   1-12 (13-24) Calendar Type:   Date Luminous Features:   Tritium Gas Tubes and MaraGlo™ Crystal Material:   Sapphire Crown Type:   Screw-in Case Material:   316L Stainless Steel Case Finish:   Brushed Bezel Type:   Uni-Directional Bezel Scale:   60 Minute Submersibility:   30 ATM Case Diameter:   36mm Case Thickness:   14mm Lug Width:   18mm