Sinn
104 ST SA A
SPECIFICATIONS
Movementautomatic
CaliberSellita SW220-1
Case size41mm
Case material316L stainless steel
Case shaperound
Thickness11.9mm
Lug width20mm
Water resistance200m / 20 ATM
Crystalsapphire
Dial colorblack
Complicationsday-date
CasebackDisplay
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The Sinn 104 ST SA A is a versatile pilot-style instrument watch known for its robust 316L stainless steel case, 200m water resistance, and distinctive black dial with Arabic numerals. It features a day-date complication powered by a Sellita SW220-1 automatic movement, visible through an exhibition sapphire caseback. This model is a cult favorite among enthusiasts for its blend of tool watch functionality and classic aesthetics.