Chronoswiss

ReSec Black Ice

Reference Number :

CH-6925M-BKBK

Series : Open Gear

Retail: $13,310

(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 TakeThis isn't just a watch; it's a slice of engineered attitude for your wrist. The Chronoswiss Open Gear ReSec Black Ice CH-6925M-BKBK takes its cues from frozen lakes and heavy metal – an unlikely pairing that somehow just works. Forget boring black; the DLC-coated steel case plays with light and shadow across its matte and satin surfaces, making it look different from every angle. The real showstopper is the dial: a 42-part mini-machine room. You've got the hours ticking away off-center at 12, revealing the 'open gear' mechanics beneath, while the central minute hand sweeps traditionally. Then, BAM, the retrograde seconds at 6 o'clock snaps back every minute – pure mechanical theatre. It runs on the robust C.301 automatic movement, visible through the back with its cool blue, skeletonized rotor. Slapped onto a neoprene and leather strap, this 100m water-resistant beast is limited to just 50 pieces, making it as exclusive as it is edgy. It's less a time-teller, more a conversation starter with serious technical chops.

DescriptionThe Chronoswiss Open Gear ReSec Black Ice, reference CH-6925M-BKBK, is a mechanical wristwatch manufactured with specific dimensional and material properties. Its case, constructed from stainless steel subjected to a black Diamond-Like Carbon (DLC) coating process, measures 44 millimeters in diameter and 13.35 millimeters in height. This coating enhances surface hardness and provides a distinctive aesthetic. The case architecture incorporates a screw-down bezel featuring a complete thread design and side knurling, contributing to structural integrity and facilitating grip. Overlying the 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 back is also of a screw-down type, ensuring water resistance, and features a satin finish alongside a flat sapphire crystal insert, permitting observation of the internal mechanism. Water resistance is rated at 10 bar, equivalent to a hydrostatic pressure depth of 100 meters. The lug spacing, determining the compatible band width, is specified at 22 millimeters. The overall case finish is predominantly matte, with certain surfaces exhibiting a vertical satin finish for textural contrast.

Internally, the timepiece utilizes the Chronoswiss Caliber C.301, an automatic, self-winding mechanical movement. Operational frequency is set at 4 Hz, corresponding to 28,800 alternations per hour (A/h), a standard rate for contemporary precision movements balancing accuracy and longevity. The power reserve, representing the duration the fully wound mainspring can power the watch autonomously, is approximately 42 hours. This caliber incorporates 33 jewels, synthetic rubies strategically placed at high-friction points within the gear train and escapement to reduce wear and improve efficiency. Movement finishing includes polished surfaces on the pallet lever, escape wheel, and screws. The bridges and plates are adorned with perlage, a decorative pattern of overlapping small circles. A distinctive feature is the skeletonized rotor, visible through the case back, which is blued, enhanced with Côtes de Genève striping, and mounted on a ball bearing system for efficient winding. The dial construction is complex, comprising 42 individual parts arranged on two distinct levels. The base level is treated with a galvanic black finish. The upper level features screwed-on, skeletonized train wheel bridges, exposing elements of the gear train, and incorporates a funnel-like structure for the off-centre hour display located at the 12 o'clock position. A retrograde seconds display is positioned at 6 o'clock. Time indication is achieved via central minutes, the aforementioned off-centre hours, and the retrograde seconds mechanism. The hands are lacquered, adopting the "Trigono" shape, and feature Super-LumiNova inlays and tips for enhanced low-light visibility, complementing the cylinder-shaped Super-LumiNova hour indexes. This model is a limited production run, restricted to 50 units.

GenderMen

SignaturesChronoswiss

Country of OriginSwitzerland

Case Size44 mm

MovementAutomatic

CaliberC.301

FunctionsHours, Minutes, Seconds, Retrograde, Regulator

Power Reserve42 Hours

Case MaterialsStainless Steel, DLC

Bezel MaterialsStainless Steel, DLC

Lug MaterialsStainless Steel, DLC

Case BackSapphire Crystal