Product Overview
Meet the T9 upgraded Hublot Big Bang 20th Anniversary Edition Ref.431.OM.1338.RX.
Unlike many generic versions on the market that reuse the older 44 mm case from reference 301.SB.131.RX with overly protruding chronograph pushers, this model uses brand‑new tooling built strictly to the original 43 mm dimensions. Every curve and edge is reshaped for ergonomic wear and authentic proportions — a true upgrade in fit and finishing. Multiple premium finishes available.
Case & Ergonomic Design
- Exact original size: 43 mm diameter, 15 mm thickness
- Fully redesigned ergonomic case profile with wider, refined polished chamfers along all edges
- Slimmer, correctly contoured chronograph pushers (no over‑bulky, out‑of‑proportion pushers seen on outdated 44 mm copies)
- Sharp, clean machining across lugs and case sides
- Fitted with scratch‑resistant, anti‑glare sapphire crystal for maximum dial clarity
Dial & Signature Big Bang Style
Iconic carbon‑fiber‑style checkered grid dial is faithfully reproduced. Applied numerals, baton markers and hands with luminous treatment keep the watch highly readable day and night. Chronograph sub‑dials, scale markings and date window are precisely positioned according to original specifications.
- Movement: HUB1280 Automatic Chronograph
Powered by the finely tuned automatic chronograph movement replicating the HUB1280.
- Fully functional chronograph complications
- Impressive 72‑hour power reserve
- Smooth winding and reliable long‑term performance, capturing the bold mechanical spirit of the Big Bang collection
Strap & Quick‑Release System
- Premium imported fluoro‑rubber strap: soft, skin‑friendly, flexible and highly resistant to sweat and ageing
- One‑click quick‑release end links for fast, tool‑free strap swaps
- Deep, crisp molded tread texture matching the original strap pattern
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