21mm black - barton elite silicone watch bands - quick release - choose strap color & width barton watch bands <b> barton's elite silicone quick release watch bands</b> feature the comfort, fit and durability sought after by the most discerning watch enthusiasts. two strap lengths are included with each purchase to assure a perfect fit for nearly any wrist. barton's proprietary locking feature keeps the lose end of the strap neatly tucked away. </br> </br> waterproof and lightweight, yet sturdy – ideal for active lifestyles. fabricated from high tensile silicone and 316l surgical grade stainless steel. </br></br> <b> available widths (note taper from watch to buckle):</br>-24mm at watch head / 22mm at buckle</br>-23mm at watch head / 22mm at buckle</br>-22mm at watch head / 20mm at buckle</br>-21mm at watch head / 20mm at buckle</br>-20mm at watch head / 18mm at buckle</br>-19mm at watch head / 18mm at buckle</b>-18mm at watch head / 16mm at buckle</b> </br></br>integrated quick release spring bars allow you to swap straps in seconds without the need for tools. compatible with any watch (traditional or smart watch) that uses standard spring bars. to determine proper width for your watch, measure the width where current band attaches to the watch head. </br></br> <b>a few common compatible smart watch widths:</b> </br>- q tailor :: 18mm</br>- q accomplice :: 16mm </br>- q gazer :: 20mm</br>- q founder 2.0 / marshal / wander / crewmaster :: 22mm</br>-moto 360 2nd gen women's 42mm :: 16mm width</br>-moto 360 2nd gen men's 42mm :: 20mm width</br>-moto 360 2nd gen 46mm :: 22mm width </br>- gear s2 classic :: 20mm width </br>- gear s3 classic :: 22mm width </br>- gear s3 frontier :: 22mm width </br>- gear sport :: 20mm width </br>-ticwatch e :: 20mm</br>ticwatch 2 :: 20mm</br>-withings nokia activité :: 18mm width</br>-withings nokia steel hr 36mm :: 18mm width</br>-withings nokia steel hr 40mm :: 20mm width</br></br> note that these straps will also fit thousands of other traditional watches with 18mm, 19mm, 20mm, 21mm, 22mm, 23mm or 24mm widths.