Zenith — Defy El Primero 21. Titanium case: length approx. 44 mm, width approx. 44 mm, thickness approx. 14.5 mm; wrist circumference approx. 15.5 cm - 20 cm, alligator/rubber strap / grey, sapphire crystal, titanium bezel, skeletonised dial. Automatic movement. Functions: water-resistant (100 m), Luminova small seconds, power reserve indicator, chronograph, see-through case back. Accessories: Manufacturer’s warranty (March 2018), manufacturer’s box, booklet, chronometer certificate. Additional details: Type: Wristwatch / Men’s.