Hublot Spirit of Big Bang Tourbillon Sapphire Watch - 42 mm - Sapphire Dial - Transparent Strap Limited Edition of 50-645.JX.5120.RT Air has a White Gold 52

has a White Gold 52 mm Round Case with Screw Down Crown and a White Gold

single direction bezel

the watch harmoniously combines comfort and style

unidirectional rotating bezel along with gradient blue sapphires over the first 15 minutes and an orange sapphire set at 12 o'clock

Hublot Spirit of Big Bang Tourbillon Sapphire Watch - 42 mm - Sapphire Dial - Transparent Strap Limited Edition of 50-645.JX.5120.RT Air has a White Gold 5242 mm polished sapphire crystal case, polished sapphire crystal bezel with 6 h shaped titanium screws, sapphire crystal with anti reflective treatment, sapphire dial, HUB6020 manufacture manual winding power reserve skeleton tourbillon movement, approximately 115 hours of power reserve, transparent structured lined strap, titanium deployant buckle. Water resistant to 30m (3 ATM).