$1,599.00 Original price was: $1,599.00.$1,099.00Current price is: $1,099.00.
Buying notes for this configuration
This reference is defined by shape before complication. A round Big Bang Unico can let its dial dominate; the Square Bang puts a clear architectural outline around it, and the white ceramic makes that outline even more immediate. The useful alternative is the black Square Bang Unico, which keeps the same geometric language but lowers the visual volume. Choose white when the case should stand apart from dark clothing, summer layers or a monochrome casual outfit. The textured strap prevents the watch from becoming a purely formal statement.
The 821.HX.0170.RX is the Square Bang Unico for buyers who want the case geometry to remain visible from across the room. Its 42mm white ceramic case and matching bezel frame a skeletonized chronograph dial, while H-shaped titanium screws add deliberate points of contrast. The textured rubber strap keeps the profile sporty and the One-Click system makes the wrist setup more flexible. Choose it when a bold white case and squared architecture matter as much as the openworked chronograph layout.
Confirmed configuration
- Movement
- Custom HUB1280 Unico clone automatic
- Case Material
- White ceramic
- Bezel
- White ceramic with H-shaped titanium screws
- Crystal
- Sapphire crystal with colorless anti-reflective coating
Geometry that stays in view
The 821.HX.0170.RX makes its square case the first buying decision. White ceramic carries across the case and bezel, so the outer outline stays easy to read while the skeletonized chronograph dial supplies the internal complexity. H-shaped titanium screws interrupt the white surface with small technical markers. The result is graphic and intentional rather than simply bright.
Openworked detail inside a strong frame
The dial layout gives this Square Bang its mechanical character, but the case does not allow that detail to blur the silhouette. A visible column wheel at 6 o'clock, bi-compax register arrangement and skeletonized date ring are part of the configured display described for this reference. Together they make the front rewarding to inspect, while the 42mm size prevents the square form from becoming needlessly oversized.
White ceramic, grounded by rubber
The textured rubber strap keeps the watch connected to sport use and gives the bright case a darker visual base. That contrast is useful with black denim, technical outerwear or lighter summer clothing. The One-Click system adds a practical selection point: the buyer can alter the strap setup without changing the central white ceramic identity. This is a stronger fit than a black Square Bang when visibility and case presence are the goal.
The Square Bang format also changes how the openworked dial is read. Instead of a round bezel receding around the registers, the white ceramic frame gives the display straight visual boundaries and clear corners. Buyers who enjoy the chronograph layout but want the case itself to stay equally prominent will find that balance more satisfying than a round Big Bang configuration. The wider visual field of the square outline also makes the white-and-black contrast easy to appreciate from different angles.
What to review before dispatch
QC should verify the consistency of the white ceramic finish and the placement of every H-shaped screw, then check the skeleton dial and register alignment. Confirm chronograph hand reset, One-Click strap fit and clasp security so the architectural case is matched by a tidy and secure wrist setup.
Questions to settle before ordering
What makes the 821.HX.0170.RX distinct?
Its 42mm white ceramic square case and bezel keep the architecture visible, while the skeletonized chronograph dial supplies the internal depth.
Why choose white instead of a black Square Bang?
White makes the squared outline stand apart more strongly against dark or neutral clothing. Black is the quieter choice when lower visual contrast is preferred.
What should QC focus on?
Inspect the white ceramic case and bezel for consistent finish, H-shaped screw placement, skeleton dial and register alignment, chronograph hand reset, One-Click strap fit and clasp security.
Review the exact configuration before it leaves.
Use model-specific QC proof to confirm the visible details and stated functions that informed your choice.
Contact Support
QC proof before dispatch