Casio Edifice Chronograph Ref. EF-550D-1AVEF
Racing Chronograph · Casio (Casio Computer Co., Ltd.). Specifically within the 'Edifice' line, which is the brand's 'Speed and Intelligence' luxury-sport tier.
Period: Modern Tool Watch / Motorsports Era (2010s). Characterized by aggressive, multi-layered dial architecture and automotive-inspired aesthetics.
Type
Racing Chronograph
Brand
Casio (Casio Computer Co., Ltd.). Specifically within the 'Edifice' line, which is the brand's 'Speed and Intelligence' luxury-sport tier.
Movement
Japanese Quartz, Casio Module 5147. Highly accurate with a 1/20-second chronograph function and a 2-year battery life.
Dimensions
Case diameter: 45mm; Thickness: 12mm; Lug-to-lug: 50.8mm; Lug width: 22mm. It is a large, high-presence watch that wears substantial on the wrist.
Description
The EF-550D is a bold expression of Casio’s partnership with professional motorsports. With a dial inspired by high-performance engine covers and dashboard gauges, it offers a 3D visual depth rarely seen in its price bracket. It serves as a rugged, stylish everyday piece for those who appreciate racing heritage.
Key Features
Mechanical-look dial with moving disk sub-dial at 6 o'clock; high-torque motors for rapid hand movement; screw-lock crown for enhanced water security.
Dial Description
Matte black multi-layered dial with three sub-dials. Features a retrograde-style 1/20 second counter at 6, chronograph minutes at 12, and seconds at 9. Red accents on hands; applied luminescent baton indices.
Case Material
316L Stainless Steel with a mix of brushed and high-polished finishes.
Crystal Type
Flat Mineral Glass with scratch-resistant coating.
Bezel Details
Fixed Ion-Plated (IP) black bezel featuring a white tachymeter scale for speed calculations.
Crown & Pushers
Large screw-lock crown protected by integrated guards; two distinctive rectangular pump-style pushers for chronograph start/stop and reset.
Bracelet or Strap
Solid link stainless steel bracelet with a three-fold clasp and push-button release. Features a mix of brushed and polished center links.
Caseback Details
Solid screw-down case back with engraved Edifice logo, water resistance rating, movement module number (5147), and stainless steel hallmark.
Movement Type
Japanese Quartz, Casio Module 5147. Highly accurate with a 1/20-second chronograph function and a 2-year battery life.
Water Resistance
100 Meters (10 Bar). Suitable for swimming and snorkeling, but not recommended for high-impact water sports or deep diving.
Origin & Provenance
Japanese Movement; Cased in China. Casio is a leader in electronic watchmaking with a reputation for extreme reliability.
Age Estimate
Circa 2010–2015 production.
Cultural Significance
Represents the democratization of 'racing' watch tech, bringing professional chronograph features and high-end finishing to the mass-market enthusiast community.
Condition Notes
Excellent / Mint. Based on user description of 'no damage' and inclusion of box and papers, this specimen appears well-preserved with sharp case lines and a clean crystal.
Value Estimate
Market value: $90 - $150 USD. Value is maximized by the 'Box and Papers' inclusion, which is harder to find for older Edifice models.
Care & Maintenance
Battery replacement every 2 years; gasket inspection every 3-5 years to maintain water seals. Clean bracelet with a soft brush and mild soapy water.
Similar Watches
Seiko Sportura Chronograph (more expensive, often sapphire), Citizen Eco-Drive Brycen (solar powered), Tissot V8 Chronograph (Swiss entry-level).
Interesting Facts
The EF-550 series gained significant popularity through Casio's long-standing sponsorship of the Red Bull Racing Formula One team during their championship-winning years.
Notes
No damage has box and papers