Here i have an adaptor for the sony smartwatch 3 that will let you attach a normal 24mm watchstrap. This is matt black in colour and slightly textured finish. If like me you are struggling to find a SWR510 watch strap in a sensible colour this is the way forward. As you can see as an example in the 'Blue' image you can still press the button on the watch no problem! This isn't a genuine Sony part but it fits & works very well!

SONY SMARTWATCH & WATCH STRAP NOT INCLUDED

Other colours available http://www.ebay.co.uk/sch/maddog1974/m.html?item=162382245712&ssPageName=STRK%3AMESELX%3AIT&rt=nc&_trksid=p2047675.l2562

Other colours available - 'See other items'

(Colours may vary slightly due to monitor settings)