This replica Cubitus 5821/1A black presents the diamond-set two-tone configuration with a high-contrast black dial. The 5821/1AR reference in black is arguably the most legible version in the diamond Cubitus range because the dark background makes the luminous hands and diamond indices stand out with maximum clarity. At 45mm the cushion-shaped case commands attention, and the rose gold elements along the bezel and bracelet mid-links add warmth against the monochrome face. Patek Philippe positioned this variant as the dressy-sport option for buyers who want presence without color saturation on the dial.

Case & Movement Specs

• Case diameter: 45mm cushion-shaped
• Case material: stainless steel and rose gold two-tone
• Bezel: diamond-set
• Dial: black with hobnail texture and diamond hour markers
• Crystal: sapphire with anti-reflective coating
• Bracelet: integrated two-tone with quick-adjust clasp
• Movement: automatic caliber 26-330 SC
• Functions: hours, minutes, seconds, date

The black dial shifts the entire visual dynamic compared to the green and blue versions. Where colored dials draw the eye to the surface texture, the black version recedes and lets the diamond bezel and gold accents carry the design forward.

Caliber Breakdown

Inside sits the caliber 26-330 SC, operating at 28,800 vibrations per hour. The silicon Spiromax balance spring provides improved resistance to magnetic interference and temperature variation. At around 45 hours of power reserve, it handles a full weekend off the wrist without losing time. The micro-rotor architecture allows the caseback to remain relatively slim for a 45mm sport piece. View all current options across the Cubitus collection to compare bezel treatments and dial colors on the same mechanical platform.

How It Compares

The black dial is the most traditionally masculine option among the diamond Cubitus references. While the green version leans earthy and the blue plays with cool tones, black is neutral territory that works with virtually any wardrobe. The diamond bezel still signals a departure from the plain-steel Cubitus models, but the dark dial keeps the overall impression grounded. For those exploring bolder territory, the yellow dial diamond version goes in the opposite direction with maximum vibrancy. This replica Cubitus 5821/1A black remains the safe yet striking choice within the diamond-set range.