Titanium and Blue Ceramic on the wrist
Spirit of Big Bang reference 642.NL.7170.RX uses a titanium tonneau case, blue ceramic bezel and blue structured rubber strap to give its skeletonized chronograph a cool, technical color block.
HublotSpirit of Big Bang642.NL.7170.RX
Original price was: $1,399.00.$899.00Current price is: $899.00.
Spirit of Big Bang reference 642.NL.7170.RX uses a titanium tonneau case, blue ceramic bezel and blue structured rubber strap to give its skeletonized chronograph a cool, technical color block. The blue ceramic bezel is the anchor. It picks up the strap and sits against titanium, so the openworked sapphire dial has a clear frame instead of competing with several unrelated finishes. It works for a larger-wrist casual rotation, particularly with denim, navy tailoring or technical fabrics. The tonneau case reads wider than a round 42mm and should be worn with that character in mind.
Spirit of Big Bang reference 642.NL.7170.RX uses a titanium tonneau case, blue ceramic bezel and blue structured rubber strap to give its skeletonized chronograph a cool, technical color block.
The blue ceramic bezel is the anchor. It picks up the strap and sits against titanium, so the openworked sapphire dial has a clear frame instead of competing with several unrelated finishes. It works for a larger-wrist casual rotation, particularly with denim, navy tailoring or technical fabrics. The tonneau case reads wider than a round 42mm and should be worn with that character in mind.
The build uses a modified A7750-based HUB4700 clone for this tonneau chronograph. Its skeletonized decoration supplies the layered view through the sapphire dial, while the blue ceramic bezel keeps the broad Spirit case defined. The technical distinction is different from the Unico’s dial-side HUB1280 architecture; this version is about the tonneau case and its cool material pairing.
The white ceramic 642.HX.0170.RX Spirit of Big Bang is the useful nearby choice: White ceramic is a brighter Spirit treatment; titanium and blue ceramic give this version a cooler, more technical edge.
The blue and titanium palette works with navy, grey and technical fabrics, giving the tonneau case a daily role without the visual weight of a warm-metal version.
Before dispatch, our QC team reviews the sapphire skeleton dial, blue ceramic bezel finish, titanium case surfaces, H-screw seating, chronograph controls, strap fit and deployant lock.
The titanium and blue ceramic pairing gives this Spirit of Big Bang a cooler, more technical character than a gold-tone version.
The tonneau case has broad visual shoulders, while the 42mm specified size keeps the overall scale within a familiar Spirit of Big Bang range.
Our watch desk can explain differences in case proportion, dial layout and wearing style.
QC proof before dispatch