Chronoswiss

Black Hole

Reference Number :

CH-9345M.2-GRBK

Series : Space Timer

Retail: $20,600

(As of: 04/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Chronoswiss. If you are interested in selling this watch to us, you can contact us here.

Quick TakeForget your standard wristwear; the Space Timer Black Hole is less a watch and more a portal strapped to your arm. Chronoswiss wasn't messing around when they named this limited edition piece. That 44mm DLC-coated case isn't just black; it's an event horizon, pulling your gaze into the seriously complex dial within. Inspired by actual NASA imagery and built with an insane 63 parts plus 17 layers of nanoprinting, it's like having a swirling nebula right there. The off-center hours with the 'Open Gear' feel like peeking into the universe's engine room. Then there are the details: the tiny steel balls rolling through the transparent date ring, the lume-filled ceramic cylinders for minutes, and that cool titanium hemisphere doing double duty for moon/stars. Even the Caliber C.308 movement, visible through the back, gets the stealth treatment with a skeletonized black rotor. It’s a technical marvel, sure, with its 100m water resistance and 42-hour power reserve, but it wears its cosmic heart on its sleeve—or rather, under its anti-reflective sapphire crystal. It’s dark, mysterious, and utterly captivating, a proper conversation starter for anyone fascinated by the final frontier.

DescriptionThe Chronoswiss Space Timer Black Hole, reference CH-9345M.2-GRBK, presents a robust case architecture constructed from stainless steel enhanced with a durable black Diamond-Like Carbon (DLC) coating. This housing measures 44 millimeters in diameter and possesses a vertical dimension (height) of 15.2 millimeters, establishing a significant wrist presence. The case assembly comprises 19 distinct components, reflecting a meticulous construction methodology. Ensuring water resistance suitable for surface water activities, the case back is a screw-down type, fabricated with a satin finish and incorporating a sapphire crystal aperture for movement observation; it achieves a water resistance rating of 10 bar, equivalent to 100 meters. Complementing the case back is a polished screw-down bezel, distinguished by its full thread design and side knurling, providing both functional grip and aesthetic detail. Protecting the intricate dial is a curved sapphire crystal, treated with a double anti-reflective coating to minimize glare and maximize legibility under various lighting conditions. The case finishing exhibits a dual aesthetic, featuring partly polished surfaces contrasted with areas of vertical satin finish. An onion-style crown facilitates time-setting and winding operations. The lug configuration accommodates a strap width of 22 millimeters, ensuring compatibility with standard strap dimensions and contributing to the overall balanced proportions of the timepiece despite its substantial diameter and height. The integration of these materials and finishes results in a structure that is both visually striking and engineered for resilience against daily wear.

Powering the CH-9345M.2-GRBK is the automatic Caliber C.308 movement, operating at a standard frequency of 4 Hz, which translates to 28,800 alternations per hour (A/h). This frequency contributes to the smooth sweep of the central seconds hand and overall timekeeping stability. The movement incorporates 33 jewels to minimize friction at critical points within the gear train and escapement, enhancing longevity and efficiency. When fully wound, the mainspring provides an approximate power reserve of 42 hours. Examination of the movement's finish reveals careful attention to detail, including a polished pallet lever, escape wheel, and screws. Furthermore, the bridges and plates are adorned with perlage, a decorative pattern of small, overlapping circles. Visible through the case back's sapphire crystal, the rotor is notably skeletonized and finished in galvanic black, engraved with classic Geneva Stripes, adding visual depth and complexity; its mounting utilizes a ball bearing system for efficient winding. The dial itself is a highly complex element, resulting from a 63-part construction process. Its base features a lasered surface treated with a multi-layered nanoprint finish derived from NASA photography, depicting a cosmic scene. Skeletonized train wheel bridges with angled and polished edges, vertical satin finishing, and sandblasted galvanic black surfaces contribute to the multi-dimensional appearance. Time indication is achieved through off-center hours displayed at the 12 o'clock position, utilizing an "Open Gear" mechanism, alongside central minute and central second hands. Portions of the hour and date indications are rendered in transparent ITR2 composite material. Minute markers are formed from massive cylinders composed of a Super-LumiNova and ceramic mixture, while the date is indicated via 0.6mm stainless steel balls housed within the transparent ITR2 date ring. A distinctive, thermally colored titanium hemisphere serves as a moon/star indicator, enhanced with Super-LumiNova. The "Blade" shaped hands are rhodium-plated and polished, featuring Super-LumiNova inlays for low-light visibility; the minute hand is carefully bent by hand, and the seconds hand is finished in a contrasting red lacquer. Limited to only 50 pieces worldwide, this model features a hand-sewn calfskin strap secured by a folding clasp.

GenderMen

SignaturesChronoswiss

Country of OriginSwitzerland

Case Size44 mm

MovementAutomatic

CaliberC.308

FunctionsHours, Minutes, Seconds, Date, Moonphase

Power Reserve42 Hours

Case MaterialsStainless Steel, DLC

Bezel MaterialsStainless Steel, DLC

Lug MaterialsStainless Steel, DLC

Case BackSapphire Crystal