Automatic bi compax chronograph calibre g 1733 with gmt hand and double disc date at 12 oclock 42 hour power reserve 5n 18k red gold case with fast action start stop lever and large reset pusher in black pvd silver and green sapphire bezel with 24 hour gmt numerals and markers water resistant up to 330 feet 100 metres available with black rubber strap or black calfskin bracelet