The 206 St Ar is historically linked to the 203 St and 203 Ti Ar, in which Ar-Dehumidifying Technology was first used in 1995. Optimum readability is ensured by a black dial, which also gives the watch a mechanical and instrumental look. To remain as true to the original of the 203 St as possible in other respects, we have also kept the screw push-piece look. Thanks to our D3-System, however, screwable push-pieces are no longer required in the 206 St Ar. This makes the chronograph functions easily accessible and easy to operate. Model 206 St Ar therefore represents a contemporary take on the traditional 203 series, which is reflected in a new diameter of 43 mm rather than 41 mm.Case made of stainless steel, polished / satinizedElectroplated black dialTested based on European diving equipment standards and certified by DNV GLPressure-resistant to 300 m diving depth (30 bar), certified by DNV GLAr-Dehumidifying Technology enhances functional reliability and freedom from foggingCaptive diver’s bezel with minute ratchetingSapphire crystal glass in frontTransparent back made of sapphire crystal glassLow pressure resistantTechnical detailsMechanical movement Valjoux 7750 with self-winding mechanismCase made of stainless steel, polished / satinizedElectroplated black dialTested based on European diving equipment standards EN 250 / EN14143 and certified by DNV GLPressure-resistant up to 300 m diving depth (= 30 bar), certified by DNV GLAr-Dehumidifying Technology enhances functional reliability and freedom from foggingCaptive Diver's bezel with minute ratcheting and luminous key markPush-pieces with D3-SystemSapphire crystal glass in front, anti-reflective on both sidesTransparent case back made of sapphire crystal glass, anti-reflective on the interiorLow pressure resistantCaseCase made of stainless steel, polished / satinizedSapphire crystal glass in front, anti-reflective on both sidesTransparent case back made of sapphire crystal glass, anti-reflective on the interiorCase back screw-fastenedCrown screwableMeet the technical requirements for waterproofness, as set out in standard DIN 8310Pressure-resistant up to 300 m diving depth (= 30 bar), certified by DNV GLAccording to the technical demands for the diving norm DIN 8306Tested based on European diving equipment standards EN 250 / EN14143 and certified by DNV GLLow pressure resistantFunctions Hours, minutes, subsidiary secondsDate displayDay of the week displayChronographDiver's bezel with minute ratcheting and luminous key markSINN TechnologiesAr-Dehumidifying Technology enhances functional reliability and freedom from foggingPush-pieces with D3-SystemCaptive bezel Dimensions and WeightCase diameter: 43 mmBand lug width: 22 mmCase thickness: 17 mmWeight without strap: 95 grammeDial and Hands Electroplated black dialIndices coated with luminescent colourHour, minute and second hand coated with luminescent colourDimensions and WeightCase diameter: 43 mmBand lug width: 22 mmCase thickness: 17 mmWeight without strap: 95 grammeWarranty3 yearsFor more information about Sinn Spezialuhren visit the Sinn homepage.Or check out the 206 St Ar.