◷ STRAP INDEX

20mm Watch Straps — Which Watches Take Them

A 20mm strap matches any watch with a 20mm lug width. Below are popular 20mm watches; open a watch to check its spring bars, end shape and thickness before you buy.

20mm is the most common strap width of all, used on most 38–42mm sports, dive, field and dress watches. That makes it the easiest size to shop for: almost every strap range starts here.

50 watches in our index take a 20mm strap, from Baltic, Certina, Christopher Ward, Citizen, Doxa, Garmin, Grand Seiko, Hamilton, Invicta, Lorier, Nomos, Omega, Orient, Oris, Rolex, Samsung, Seiko, Sinn, Squale, Swatch, Timex, Tudor, Zodiac. 3 of them use fat 2.5mm spring bars; check that a strap's holes take them. 11 look best with curved or fitted-end straps, though straight ends still fit.

Buying tips: spring bars for these watches are 20mm long. Tapered leather listed as 20/18mm fits, because only the lug end has to match. For length, see the strap length guide and wrist calculator.

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Popular 20mm watches

Seiko SKX01320mmSeiko Prospex 62MAS20mmSeiko Prospex Willard20mmSeiko Marinemaster 30020mmSeiko Alpinist20mmSeiko SARB03320mmSeiko Presage Cocktail Time20mmSeiko Prospex Sumo20mmSeiko Prospex Monster (SRPD27)20mmSeiko Prospex Alpinist (SPB121)20mmGrand Seiko Snowflake20mmRolex Daytona20mmRolex Datejust 3620mmRolex GMT-Master II20mmRolex Air-King20mmOmega Speedmaster Moonwatch20mmOmega Seamaster Diver 300M20mmOmega Aqua Terra 4120mmTudor Black Bay 5820mmTudor Black Bay 5420mmOris Divers Sixty-Five 4020mmOris Big Crown Pointer Date 4020mmSinn 55620mmSinn 104 St Sa I20mmNomos Club Campus 3820mmHamilton Khaki Field Mechanical 3820mmHamilton Jazzmaster20mmCertina DS PH200M20mmDoxa Sub 30020mmSquale 152120mmZodiac Super Sea Wolf20mmCitizen Promaster Diver20mmCitizen Promaster Fugu (NY0040)20mmOrient Bambino 38mm20mmInvicta Pro Diver20mmTimex Weekender 4020mmTimex Expedition Scout 4020mmTimex Marlin Automatic 4020mmSwatch MoonSwatch20mmBaltic Aquascaphe20mmChristopher Ward C63 Sealander 3920mmChristopher Ward C60 Trident Pro 300 4020mmLorier Neptune20mmSamsung Galaxy Watch 6 (44mm)20mmSamsung Galaxy Watch 420mmSamsung Galaxy Watch 5 / 5 Pro20mmSamsung Galaxy Watch 720mmGarmin Forerunner 5520mmGarmin Forerunner 16520mmGarmin vivoactive 520mm