Product Overview
The upgraded Hublot Big Bang 421 (A42 Version) by LS Factory — a breakthrough sports chronograph built for bold, rugged style. Lightweight 44 mm case, skeleton open‑worked dial and iconic Big Bang design, available in multiple eye‑catching finishes.
Case & Construction
- Case diameter: 44mm, ergonomic build, lightweight and comfortable for all‑day wear
- Premium high‑performance case finishes: black ceramic, brushed steel, matte blue, military green, khaki and two‑tone variants
- Scratch‑resistant sapphire crystal
- Signature exposed‑screw bezel, faithfully reproduced original Big Bang silhouette
Dial
- Open‑work skeleton dial with visible mechanical details
- Clear printed chronograph scales, "FLYBACK" marking and distinctive oversized numerals
- Color‑matched hands and sub‑dial accents for each case variant
Movement
- Custom HUB 1280 automatic chronograph movement
- Reliable automatic winding, full chronograph functions, smooth operation
Strap
- Woven texture rubber strap with one‑click quick release
- Easy strap swap; robust, sporty and comfortable on the wrist
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