From Graham – 

The case is of stainless steel and measures 44 mm in diameter. It is water resistant to 330 feet / 100 m.  The movement is listed as the G1747, automatic chronograph 28’800 A/h (4Hz). 
It boasts a power reserve of 48 hours, and the 
movement is  Chronofiable® certified.Limited to 100 pieces and priced at $7,250.00 US
Available direct from Graham
https://graham1695.com/collections/new-collection/products/chronofighter-vintage-limited-edition