Seiko Prospex 3rd Gen”Sumo” Diver’s 200m Automatic Green
Product Overview
The Seiko Prospex 3rd Gen “Sumo” Diver’s Watch SPB103J1 is a high-performance automatic timepiece built for serious divers and watch enthusiasts. Designed for men who demand precision and durability, this watch combines Seiko’s legendary engineering with professional-grade dive functionality. Its striking green dial and robust construction make it both a functional tool and a bold fashion statement. Whether you’re exploring underwater environments or navigating daily life, the SPB103J1 delivers reliability and style in equal measure.
Key Features
- 20 ATM Water Resistance: Engineered for serious diving, this watch withstands water pressure up to 200 meters (20 atmospheres), making it suitable for recreational scuba diving, snorkeling, and a wide range of water sports. The screw-down crown enhances water resistance, ensuring internal components remain protected during submersion.
- 45mm Stainless Steel Case: The substantial yet wearable case size offers a commanding presence on the wrist while maintaining comfort during extended wear. Crafted from high-grade stainless steel, it resists corrosion and daily wear, making it ideal for both aquatic adventures and everyday use.
- Automatic Movement: Powered by Seiko’s in-house automatic caliber, the watch self-winds with the natural motion of your wrist—no battery required. This ensures consistent performance and reduces long-term maintenance, appealing to those who value mechanical craftsmanship and reliability.
- Green Dial with Luminous Markers: The vibrant green dial provides excellent contrast and readability, enhanced by luminous hour markers and hands that glow brightly in low-light or underwater conditions. This feature is essential for divers needing clear time checks in dark or murky environments.
- Sapphire Crystal Glass: The face is protected by scratch-resistant sapphire crystal, offering superior clarity and resilience against everyday wear, impacts, and environmental exposure. Unlike mineral or acrylic glass, sapphire maintains its finish over time, preserving the watch’s appearance.
- Stainless Steel Bracelet: The integrated stainless steel bracelet is built for strength and comfort, featuring a secure folding clasp with a safety lock. Designed for active use, it resists saltwater corrosion and adjusts easily for over-wetsuit wear, a key requirement for divers.
- Date Function: A practical date display at the 3 o’clock position adds everyday utility without compromising the watch’s clean, professional aesthetic. The date window is framed for clarity and blends seamlessly into the overall design.
- Official Packaging: The watch arrives in its official Seiko box, ensuring authenticity and providing secure storage or an elegant presentation for gifting. The packaging includes protective materials to safeguard the watch during transit.
Technical Specifications
- Model Number: SPB103J1
- Department: Men’s
- Case Diameter: 45 mm
- Case Material: Stainless Steel
- Strap Material: Stainless Steel Bracelet
- Glass Type: Sapphire Crystal
- Water Resistance: 20 ATM (200 meters)
- Movement: Automatic
- Functions: Time, Date
- Product Type: Wristwatch
- Packaging: Official Seiko Box
- Item Weight: 10.58 ounces
- Product Dimensions: 3.15 x 3.15 x 3.15 inches
- Manufacturer: Seiko
- ASIN: B07XDX2CZ2
- Date First Available: September 3, 2019
- Discontinued Status: No
Benefits & Use Cases
This watch is ideal for divers, outdoor adventurers, and professionals who need a dependable timepiece in demanding conditions. Its 200-meter water resistance allows safe use during snorkeling, swimming, and recreational diving, meeting ISO standards for dive watches. The automatic movement ensures accurate timekeeping without battery changes, making it perfect for travelers and those who prefer low-maintenance watches. The stainless steel construction and sapphire glass provide excellent resistance to scratches and corrosion, ideal for daily wear in urban or rugged environments. The bold green dial and robust design also make it a standout accessory for casual and semi-formal occasions, blending sporty functionality with everyday style.
Important Notes
Please note that warranty details are provided by the manufacturer and should be reviewed directly through Seiko’s official support channels. The watch is shipped in its original Seiko packaging, ensuring authenticity and protection during transit. While discontinued status is listed as “No,” availability may vary by region and retailer. Always ensure proper sizing of the stainless steel bracelet for optimal comfort and security. Regular maintenance is recommended to preserve performance, especially after exposure to saltwater or extreme conditions. Rinsing with fresh water after saltwater use and periodic servicing by a qualified technician will help maintain the watch’s integrity over time.
