This exceptional timepiece features a total thickness of just 5.15mm, while its self-winding movement is just 2.23mm thick for a 40mm diameter. Octo Finissimo Automatic with mechanical extra thin manufacture movement, automatic winding (platinum microrotor), small seconds (2.23mm thick), BVL 138 – Finissimo caliber decorated by hand with côtes de Genève, chamfering and perlage finishing, 55 hour power reserve. 40 mm extra thin titanium case (5.15 mm thick), transparent case back, titanium crown set with ceramic, titanium dial, alligator strap and titanium ardillon buckle. Water-resistant up to 30 metres.