The U-Boat Classico 53 CAS 1 (Reference 2273) is an oversized, Italian-designed luxury men's watch known for its bold aesthetic and Left-handed (Destro) crown configuration.

  True to the legacy of designer Italo Fontana, this piece embraces the "oversized watch" trend with heavy inspiration from vintage naval instruments. Because it is a "Destro" style timepiece, the crown and chronograph pushers are located on the left side of the case. This design choice protects the back of the hand from the massive crown guard when worn on the left wrist, or accommodates right-hand wearers.

• Case Diameter: 53mm (often listed interchangeably as 52mm or 53mm depending on the retailer platform).

• Case Depth: 17mm to 17.2mm thick, providing massive wrist presence. 

• Case Material: Brushed 316L stainless steel with a fixed bezel. 

• Dial: Analog black dial featuring cream or luminous hour markers and oversized Arabic numerals at the 4, 8, and 12 o'clock positions.

• Movement: Swiss ETA 7750 automatic chronograph mechanical engine.

• Complications:

  • • Chronograph: Three sub-dials tracking small seconds, 12 hours, and 60 minutes.

    • Date Display: Situated uniquely at the 9 o’clock position. 

• Crystal & Case Back: Scratch-resistant sapphire crystal front with a see-through transparent case back. 

• Water Resistance: 100 meters (330 feet), making it safe for swimming and snorkeling. 

• Strap: Typically paired with a heavy-duty tan or brown calf leather strap featuring a deployment clasp.