SEIKO SKX series 5 sports made in Japan watch SBSA309 JDM

Movement
Movement number: 4R36
Drive mode: Mechanical automatic winding (with manual winding)
Accuracy: +45 seconds to -35 seconds per day
Driving period: Approximately 41 hours at maximum winding
Number of stones: 24
Function: Second hand stop function, calendar (day, week) function

Case and Strap
Case material: stainless steel, bottom: stainless steel and glass
Case dimensions: Thickness: 13.9mm, Width: 42.5mm, Height: 46.0mm
Glass material: curved hard glass
Luminous: Yes (hands and scale)
Strap material: Silicone strap
Wrist circumference (longest): 205.0mm
Watch Specifications
Waterproof: Enhanced waterproof for daily use (10 atmospheres)
Anti-magnetic: Yes
Weight: 100.0g
Other features: Anti-reversal bezel, transparent spiral case back