Movement finishing: Finely sand-blasted and satin-finished components with black coating, composed to match the grained case aesthetic
Dial: Rhodium and black-coated brass with black gold-plated appliques; red liquid fluidic hour display inside a borosilicate capillary tube; white Super-LumiNova
Strap: Pure black rubber strap plus light grey Velcro strap; titanium pin buckle and loop buckle with satin and sand-blasted finishes
Set: Full set — box and papers
Shipping: Insured overnight shipping within the U.S.
The S1 tells time like nothing else in watchmaking: hours are displayed by red liquid advancing through a borosilicate capillary tube around the dial's perimeter, driven by two bellows that compress and expand as the movement runs. When the liquid reaches 6 o'clock, it retrogrades back to restart the cycle. Central minutes, a small seconds, and a power reserve indicator round out the display, all set against a rhodium and black-coated brass dial with a grained, bead-blasted flange for a uniform monochromatic look.
The 45.3mm case is bead-blasted titanium in a two-tone silver and black-coated execution, with angular yet ergonomic lines that wear far better than the dimensions suggest. Sapphire crystal with anti-reflective coating, titanium crown, and 50 meters of water resistance make it a genuinely wearable sports watch. The full set includes both the pure black rubber strap and the sporty light grey Velcro strap, each with titanium hardware finished to match the case.
The manual-wind Caliber 501-CM runs at 4 Hz with 41 jewels and a 72-hour power reserve across its 352 components. The finishing continues the case's design language — finely sand-blasted and satin-finished parts under black coating, creating a coherent composition from dial to caseback. This 2026 example is in like-new condition with the complete set; light handling marks may occur during display or handling, and all photos show the actual watch.
Aslan Watches — physician-owned • 100% authenticity guaranteed
