40.5mm Automatic Seiko Presage
Product Overview
The 40.5mm Automatic Seiko Presage is a refined Japanese-made timepiece designed for men who appreciate mechanical craftsmanship and timeless elegance. This watch features an automatic movement, eliminating the need for battery changes while delivering reliable performance. Its open-heart dial showcases the intricate inner workings of the caliber 4R38 movement, offering a glimpse into the precision engineering behind every tick. With a sleek stainless steel case and a rich leather strap, this model blends classic design with modern functionality. Ideal for everyday wear or formal occasions, it delivers both style and substance for the discerning watch enthusiast.
Key Features
- Automatic Movement (Caliber 4R38) – Powered by natural wrist motion, this self-winding mechanism ensures consistent timekeeping without batteries, combining convenience with mechanical artistry.
- Open Heart Dial – The distinctive blue dial features an open aperture that reveals the rotating escapement, adding visual intrigue and highlighting Seiko’s horological expertise.
- Stainless Steel Case – Durable and corrosion-resistant, the 40.5mm case offers a balanced, comfortable fit suitable for most wrist sizes while maintaining a sophisticated profile.
- Genuine Leather Strap – The supple leather strap provides a comfortable, classic look that ages gracefully and pairs well with both casual and formal attire.
- Hardlex Crystal – Scratch-resistant and highly durable, this mineral crystal protects the dial while maintaining excellent clarity and impact resistance.
- See-Through Case Back – Allows a full view of the automatic movement from the back, emphasizing the mechanical craftsmanship and finishing of the internal components.
- 50M Water Resistance – Suitable for everyday exposure to water, including handwashing and light rain, though not recommended for swimming or diving.
- Pull/Push Crown – Enables easy time adjustment while maintaining a clean, uninterrupted case design when not in use.
- Buckle Clasp – Secure and easy to fasten, the buckle ensures a snug and reliable fit throughout the day.
Technical Specifications
- Case Diameter: Approximately 40.5mm
- Case Thickness: Approximately 12mm
- Movement: Automatic, Caliber 4R38
- Jewels: 24
- Display: Analog
- Dial Color: Blue
- Crystal: Hardlex
- Case Material: Stainless Steel
- Strap Material: Leather
- Clasp Type: Buckle
- Water Resistance: 50 meters
- Case Back: See-through
- Crown Type: Pull/Push
- Country of Origin: Japan
- Item Model Number: SSA405J1
- Department: Men’s
- ASIN: B0876QN5G9
- Product Dimensions: 5.91 x 3.94 x 1.97 inches
- Item Weight: 7.05 ounces
- Batteries: 1 unknown battery required (included)
- Date First Available: March 26, 2020
- Manufacturer: Seiko
Benefits & Use Cases
This watch is ideal for men seeking a reliable, stylish automatic timepiece that transitions effortlessly from office settings to evening events. The 40.5mm case size offers a modern yet wearable presence, making it suitable for average to slightly larger wrists. Its automatic movement appeals to those who value mechanical watches and prefer not to rely on battery replacements. The open-heart dial and see-through case back make it a conversation starter, especially among watch enthusiasts who appreciate visible movement mechanics. The leather strap enhances comfort for all-day wear and develops a unique patina over time. With 50 meters of water resistance, it handles daily splashes and brief immersion, though it should be avoided during swimming or showering. Whether worn with a suit or smart casual attire, this Seiko Presage model delivers consistent performance and enduring style.
Important Notes
This watch includes one unknown battery (installed) and comes with a leather strap and stainless steel case. While it is water-resistant to 50 meters, it is not designed for submersion or aquatic activities. For warranty details, customers are directed to click the provided link in the product information. The item was first made available on March 26, 2020, and is manufactured by Seiko in Japan. Please note that the product dimensions and weight reflect the packaged item, not the watch alone. Regular care, such as keeping the watch clean and avoiding extreme temperatures, will help maintain its appearance and function over time.
