Seiko 5 Sports SRPD81K1 Automatic Men's Watch Black Blue Nylon Strap

The Seiko 5 Sports collection is known for its toughness, style, and everyday reliability — and this model continues that tradition. Powered by the Calibre 4R36 automatic movement with 24 jewels, it offers manual winding, a stop-seconds function, and a 41-hour power reserve. The day-date display at 3 o’clock adds practical functionality.

The hard-coated stainless steel case measures 42.5 mm in diameter, 13.4 mm thick, and 46 mm lug-to-lug, making it both durable and comfortable. Paired with a nylon strap, it delivers a sporty, versatile design. A Hardlex crystal protects the dial, while the unidirectional rotating bezel and see-through screw case back add both function and style.

Lightweight at just 94 g, this watch offers 10 bar water resistance, ensuring readiness for everyday challenges. A robust timepiece that embodies the adventurous spirit of Seiko 5 Sports.

Movement  

Caliber Number : 4R36  

Movement Type : Automatic with manual winding  

Power reserve : Approx. 41 hours  

Jewels : 24  

Functions : Stop second hand function, Day/Date display  

Case / Band  

Case Material : Stainless steel (hard coating)  

Case Size : Thickness 13.4 mm, Diameter 42.5 mm, Lug-to-lug 46.0 mm  

Crystal : Hardlex  

Band Material : Nylon  

Distance between lugs : 22 mm  

Other Details  

Water Resistance : 10 bar  

Weight : 94.0 g  

Features : Unidirectional rotating bezel, See-through & Screw case back