5905-1A-001 | Stainless Steel

Patek Philippe
Out of stock
Ref. No.
5905/1A-001

The Patek Philippe Ref. 5905-1A-001 combines stainless steel with an olive green dial, an Annual Calendar, and a flyback chronograph.

A Modern Icon in Stainless Steel

For the first time, the Patek Philippe Ref. 5905 is presented in stainless steel, combining technical mastery with a sporty, contemporary appeal. Its striking olive green sunburst dial, paired with an integrated steel bracelet, offers a seamless blend of elegance and casual versatility. This timepiece reflects Patek Philippe's dedication to delivering high functionality wrapped in timeless design.

Movement and Complications

At the core of this watch is the Caliber CH 28-520 QA 24H, a self-winding mechanical movement that integrates a flyback chronograph and Annual Calendar. The flyback chronograph allows the central seconds hand to reset and restart instantly with the push of a button. The Annual Calendar accounts for 30- and 31-day months, requiring only one adjustment per year on March 1st. Additionally, day, date, and month are displayed through apertures, with a day/night indication adding further practicality.

Dial and Design Highlights

The olive green sunburst dial exudes understated elegance while maintaining a sporty edge. The gold-applied hour markers and precise layout enhance readability, while the subtle interplay of light and color on the dial elevates its allure. The smooth integration of the chronograph counters ensures functionality without compromising aesthetics.

Case and Dimensions

Crafted in stainless steel, the 42mm case is robust yet refined, offering durability with a polished and satin-finished design. The sapphire crystal exhibition case back reveals the meticulous craftsmanship of the Caliber CH 28-520 QA 24H movement, including its 21K gold central rotor. With a thickness of 14.13mm, the watch achieves a balanced profile, making it comfortable for daily wear.

Bracelet and Wearability

The integrated stainless steel bracelet, enhanced with alternating polished and satin finishes, ensures a secure fit while amplifying the watch’s sporty aesthetic. The fold-over clasp adds practicality and a streamlined look, making it suitable for both formal and casual occasions.

Case Back and Mechanical Craftsmanship

The sapphire crystal exhibition back offers a fascinating view of the 402 components of the Caliber CH 28-520 QA 24H movement. The Gyromax® balance and Spiromax® balance spring demonstrate Patek Philippe’s commitment to precision and innovation, while the 21K gold rotor highlights the brand’s signature luxury.

Patek Philippe: Where Elegance Meets Innovation

The Ref. 5905-1A-001 exemplifies Patek Philippe’s ability to merge technical innovation with sophisticated design. From its flyback chronograph to its patented Annual Calendar, this timepiece is a testament to the brand’s horological expertise and aesthetic brilliance.

Discover the Essence of Timeless Craftsmanship

Elevate your collection with the Patek Philippe Ref. 5905-1A-001, a watch that seamlessly blends sporty sophistication and technical excellence. Available at Jewels By Love, your authorized Patek Philippe retailer.

Product Specifications
Brand Patek Philippe
Case Metal Steel
Watch Info Self-winding mechanical movement. Caliber CH 28-520 QA 24H. Flyback Chronograph. Central chronograph hand and 60-minute counter. Annual Calendar. Day, date, month and day/night indication displayed in apertures.
Caliber CH 28-520 QA 24H Self-winding Flyback chronograph. Central chronograph hand. 60-minute counter. Annual Calendar. Day, date, month and day/night indication displayed in apertures. Diameter:  33 mm. Height:  7.68 mm. Parts:  402. Jewels:  37. Power reserve:  min. 45 hours - max. 55 hours. Winding rotor:  21K gold central rotor. Balance:  Gyromax®. Frequency:  28,800 semi-oscillations/hour (4 Hz). Balance spring:  Spiromax®. Hallmark:  Patek Philippe Seal.
Case Length (mm) 42
Diameter (mm) 42
Case Shape Round
Strap Steel. Fold-over clasp.
Dial Info Olive green sunburst, gold applied hour markers.
Water Resistance (m) 30
Case Back Material Sapphire Crystal
Exhibition Back Yes
Case Thickness (mm) 14.13


Patek Philippe

Since 1839, Patek Philippe has been perpetuating the tradition of Genevan watchmaking. As the last family-owned independent watch manufacturer in Geneva, Patek Philippe enjoys total creative freedom to entirely design, produce and assemble what experts agree to be the finest timepieces in the world.