IWC Schaffhausen Portugieser Tourbillon Rétrograde Chronograph Lewis Hamilton

The IWC Portugieser Tourbillon Rétrograde Chronograph Lewis Hamilton, reference IW394008, is a chronograph with a 43.5 mm platinum case. The watch has a flying minute tourbillon; case thickness is 15.9 mm. The movement is self-winding and has a 68-hour power reserve and 42 jewels. Arched-edge sapphire glass covers the green dial with a date display and a flyback function. A green textile strap is on the watch. Water resistance is rated to 30 metres. A see-through case back displays the movement. Calibre 89900 operates at a frequency of 28,800 vibrations per hour.