The Zenith Chronomaster El Primero has an automatic movement contained within a 42mm stainless steel case. The silver sunray dial reveals a date window, tachymeter scale, and chronograph function with silver, gray, and blue subdials. It is covered by domed scratch-resistant sapphire crystal and has a transparent sapphire crystal case back. The brown alligator leather strap has protective rubber lining and a steel triple folding clasp. Water resistant to 100 meters.