The Zenith El Primero is a legendary high-frequency automatic chronograph movement first introduced in 1969, beating at 5 Hz and measuring elapsed time with precision. It features an oversized TV-shaped case with a vibrant brushed yachting metallic blue dial, often referred to as the 'Big Blue'. This watch has a unique 1970s aesthetic and is highly sought after by collectors.

• Condition: Excellent shape for its age, light signs of polish, private service in 2026
• Case size: 42mm
• Lug to lug length: 44h
• Thickness: 14.3 cc