Hublot Big Bang 421.NX.5170.RX Super Clone
$1,135.00
The 421 with the 5170 dial puts a lighter face inside the case architecture. This is the opposite approach from the all-black variants of the same series. A lighter dial makes the bezel layer read as a frame rather than a continuation of the face. The NX case material has its own surface texture, distinct from ceramic or steel. On a Big Bang, dial contrast shifts where the eye lands first.
Specification of the original
These are the specifications of the genuine Hublot Big Bang, reference 5170, the watch this piece reproduces.
| Reference | 5170 |
|---|---|
| Model | Hublot Big Bang |
| Case | 44mm on classic references |
| Movement | Calibre HUB4100 on classic chronograph references |
| Power reserve | 42 hours |
| Detail | Layered case held by six H shaped screws |
| Water resistance | 100 metres |
Where this build differs from the original
- Movement. A cloned movement built to the architecture of the original, not a genuine factory calibre. Ask us which calibre is in the build currently in stock.
- Water resistance. The genuine reference is rated to 100 metres. This build is not pressure tested. Treat it as splash resistant and keep it out of the pool.
Every watch spends 24 to 48 hours on a timegrapher before dispatch, and you approve photographs and video of your actual watch before it ships. Two year warranty, in writing. More on what a super clone is, or see the rest of the range.
| Brand |
Hublot |
|---|---|
| Model |
Big Bang |
| Reference number |
421.NX.5170.RX |
| Gender |
Men's |
| Movement |
HUB1280 |
| Power reserve |
72 Hours |
| Case size |
44mm |
| Case material |
904L Stainless Steel |
| Case color |
Steel |
| Crystal |
Sapphire |
| Dial color |
Transparent |
| Dial markers |
Numbers ,Stick |
| Bezel material |
904L Stainless Steel |
| Bezel color |
Steel |
| Bracelet material |
Rubber |
| Bracelet color |
Blue |
| Clasp |
Folding Clasp |
| Water resistance |
30M |
| Warranty |
2 years |
2 reviews for Hublot Big Bang 421.NX.5170.RX Super Clone
SHIPMENT DETAILS
At Reptime, we are committed to providing our customers with exceptional service, including fast and reliable shipping. Our shipping policy is designed to ensure that your order is processed, shipped, and delivered to you as quickly and securely as possible.
- Preparation of watch: takes about 1-2 business days.
- Delivery time: takes about 5-10 business days.
- Shipment method: DHL, EMS, UPS.
We dispatch ‘Ready to Ship’ orders within 24-48 hours of receiving payment confirmation. Once your order is shipped, the estimated delivery time is between 5 to 10 business days, depending on the destination country and customs clearance procedures. Please note that delivery times may vary during peak seasons or unforeseen circumstances.

Russell Nguyen –
Arrived and opened right away… and I was impressed. Compared with the genuine, this watch gets a lot of the same wrist presence and finish right. It made a very solid gift… I would buy again.
Tiffany –
I bought this as a rare treat after putting it off for months, and when I finally had it on my wrist, it felt like the right call. The bezel screws are lined up cleanly and give the watch the look I wanted without feeling overdone. Dial visibility is better than I expected, even indoors where I usually struggle with darker faces. My only small nitpick is that it took me a minute to get the sizing just right. Otherwise, this has been easy to wear and I can see it becoming a daily-wear piece.