Hublot Style No: 645.JX.5120.RT Hublot Spirit of Big Bang Tourbillon Sapphire Watch - 42 mm - Sapphire Dial - Transparent Strap Limited Edition of 50

42 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).