Oclock Watches Tone on Tone Silver Dial OCF30. The Silver OCF30 Dial is compatible with all Oclock watch straps, making it the latest must have item for accessorising your Oclock watch strap. Part of the Tone on Tone Dial Collection, the Oclock OCF30 dial is bold with its trendy silver design. The OCF30 dial features analogue display, citizen movement & black hands. This interchangeable dial is also Splash Proof. The O’clock Tone on Tone Silver Dial OCF30 comes complete in an official Fullspot.it Oclock presentation tin. We are official stockists of Oclock products, so this Silver Dial OCF30 comes with a 1 year manufacturer’s movement warranty.