A Bremont Martin-Baker series watch combining a 43mm hardened stainless steel case with a 22mm ‘Chalgrove’ high-performance bi-material strap. It also has a inner soft iron anti-magnetic Faraday cage protecting the movement and a protective patented anti-shock movement mount. Power is generated by a modified calibre 11 1/4" BE-36AE automatic chronometer with 25 jewels and a 38 hour power reserve. Domed anti-reflective, scratch resistant sapphire crystal with 9 layers of anti-reflective treatment protects the dial.