The Graham Silverstone Tourbillograph (ref. 2TSAS.B02A) is a men's sports watch with a 48 mm round case in stainless steel. It has a black dial under sapphire crystal.
It is powered by the self-winding mechanical calibre G1780 with a power reserve of 48 hours. Functions: Chronograph, tourbillon. Water-resistant to 50 m. The watch is fitted with an alligator leather strap with a classic buckle in steel.
This example is brand new, and comes with the original box and papers.
