Zenith Chronomaster El Primero 42 Aluminum Black 24.2041.400/21.R576

The Zenith Chronomaster El Primero 42 Aluminum Black 24.2041.400/21.R576 is a bold, lightweight chronograph that showcases Zenith’s legendary El Primero movement in a thoroughly modern package. Introduced as part of the Chronomaster collection, this reference features a 42mm black ceramized aluminum case—a proprietary treatment that significantly increases surface hardness while keeping the watch remarkably light on the wrist. The matte black dial is accented by contrasting silver chronograph registers, creating a striking "reverse panda" effect that enhances both legibility and visual depth. Powered by the iconic El Primero Caliber 400B, the automatic column-wheel chronograph beats at a high-frequency 36,000 vibrations per hour (5Hz), allowing for precise timing and delivering the smooth chronograph action that made the El Primero one of the most celebrated chronograph movements ever produced.

What makes the 24.2041.400/21.R576 especially compelling is its fusion of cutting-edge materials with classic Zenith chronograph heritage. The lightweight aluminum construction, black rubber strap, sapphire exhibition caseback, and 100 meters of water resistance give it a distinctly modern, sporty character, while the tri-register chronograph layout and high-beat movement remain true to the El Primero legacy. The watch also features a date display at 6 o’clock, a tachymeter scale, and a 50-hour power reserve, making it as practical as it is technically impressive. For collectors, this reference stands out as one of the more distinctive contemporary El Primero models—offering the performance of Zenith’s legendary chronograph movement in a stealthy, lightweight case that feels unlike almost anything else in the luxury chronograph market.

Reference: 24.2041.400/21.R576

Bracelet: Black Rubber Strap on Deployant

Case Size: 42mm x 12.75mm Thickness

Lug Width: 21mm

Case Metal: Aluminum PVD Coated

Movement: El Primero 400B - Automatic

Functions: Hours, Minutes, Seconds, Chronograph, Date

Accessories: Inner/outer boxes, no warranty card

Crystal: Sapphire

Bracelet size: 7.75”

Case has little to no wear. Strap has little to no wear. Second strap is new. Dial, hands and crystal are in perfect shape.