Seiko Prospex SPB321J1

Specifications:

Model No. SPB321J1
Movement Caliber Number: 6R35
Movement Type: Automatic with manual winding
Precision: +25 to -15 seconds per day
Power reserve: Approx. 70 hours
Jewels: 24
Stop second hand function
Date display
Case Material: Stainless steel
Thickness: 13.4mm
Diameter: 45.0mm
Lug-to-lug: 52.6mm
Crystal: Sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with secure lock , push button release with extender
Distance between lugs: 20mm
Water Resistance: 200m / 660ft diver's
Weight: 190.0g
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back