Description
SEIKO 5 Sports Field series SBSA201
A compact JDM mechanical field watch with a black dial and khaki nylon strap
Watch Type: Automatic mechanical field watch
Core Features: Caliber 4R36, 36.4 mm case width, black day-date dial, nylon strap, and 10-bar water resistance
Market Designation: Japanese Domestic Market Model
About the Watch
The SEIKO 5 Sports Field series SBSA201 brings the functional character of a field watch to a compact mid-size case. Its black dial features clearly arranged hour markings, a day-date display, and Lumibrite on the hands and indexes. A khaki nylon strap completes its practical, military-influenced appearance without adding the weight of a metal bracelet.
Inside is Seiko’s caliber 4R36, an automatic mechanical movement that also supports manual winding. The stainless steel case measures 44.4 mm in length, 36.4 mm in width, and 12.5 mm in thickness. A curved Hardlex crystal protects the dial, while the screw-down exhibition case back provides a view of the mechanical movement.
Key Highlights
- Japanese Domestic Market SBSA201 reference from the SEIKO 5 Sports Field series
- Compact 36.4 mm case width paired with a lightweight nylon strap
- Automatic caliber 4R36 with manual winding and approximately 41 hours of power reserve
- Black dial with day-date calendar and Lumibrite on the hands and indexes
- Curved Hardlex crystal, exhibition case back, and 10-bar water resistance
Design and Wearability
The 44.4 × 36.4 mm case dimensions give SBSA201 a smaller profile than many contemporary sports watches. Its nylon strap and total weight of 64 g create a relatively lightweight configuration. The manufacturer states a maximum wrist circumference of 225 mm.
Movement and Performance
Caliber 4R36 operates at 21,600 vibrations per hour and contains 24 jewels. It provides automatic winding, manual winding, and a stop-seconds function for setting the time. The manufacturer-rated accuracy is +45 to −35 seconds per day when worn on the wrist within a temperature range of 5°C to 35°C. Actual performance may vary according to temperature, movement, wearing time, and winding condition.
Product Specifications
Brand: SEIKO
Collection: 5 Sports
Series: Field series
Model / Reference Number: SBSA201
Market Designation: Japanese Domestic Market Model
Country of Manufacture: Japan
Gender Classification: Men's
Watch Type: Automatic mechanical field watch
Display Type: Analog
Dial Color: Black
Dial Features: Day-date display and Lumibrite on the hands and indexes
Case Dimensions: 44.4 × 36.4 × 12.5 mm
Case Length: 44.4 mm
Case Width: 36.4 mm
Thickness: 12.5 mm
Weight: 64 g
Case Material: Stainless steel
Crystal: Curved Hardlex
Case-Back: Screw-down exhibition case back made from stainless steel and glass
Band: Nylon strap
Band Color: Khaki
Maximum Wrist Circumference: 225 mm
Water Resistance: 10 bar
Magnetic Resistance: Magnetic resistance provided
Movement Type: Automatic with manual winding
Caliber: 4R36
Power Reserve: Approximately 41 hours when fully wound
Frequency: 21,600 vibrations per hour
Jewels: 24
Accuracy: +45 to −35 seconds per day when worn on the wrist within a temperature range of 5°C to 35°C
Core Functions: Stop-seconds function and day-date calendar
Release Date: March 2023
JAN Code: 4954628463814