Compare Studio
301.SX.130.RX vs 421.NX.1170.RX
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | Original Big Bang | — |
| Production | 2005 | 2019–present |
| Era | First Big Bang (HUB44) | In-house Unico (HUB1280) |
| Status | discontinued | current |
| Case diameter | 44mm | 42mm |
| Case material | Stainless steel | Titanium |
| Construction | Multi-layer 'fusion' case with rubber gasket | Multi-layer 'fusion' case |
| Bezel | Fixed with six H-shaped screws | Fixed with six H-shaped screws |
| Crystal | Sapphire | Sapphire |
| Caseback type | Display (sapphire) | Display (sapphire) |
| Water resistance | 100m | 100m |
| Dial | Black | Skeletonised |
| Dial configuration | — | Open-worked, movement visible |
| Hands | Baton | — |
| Movement | Automatic chronograph | Automatic chronograph |
| Caliber | HUB44 (Valjoux 7750 base) | HUB1280 Unico |
| Manufacturer | Hublot (Valjoux base) | Hublot |
| Winding | automatic | automatic |
| Power reserve | — | ~72 hours |
| Complications | Chronograph, date | Flyback chronograph, date, column wheel |
| Strap options | Integrated rubber strap | Rubber (One-Click quick-change) |