General Information:
Brand: Seiko
Model: SPB321J1
Collection: Prospex
Gender: Men
Movement:
Type: Automatic with manual winding capacity
Calibre: 6R35
Jewels: 24
Power Reserve: Approximately 70 hours
Vibrations: 21,600 vibrations per hour (6 beats per second)
Case:
Material: Stainless steel with super-hard coating
Diameter: 42.7 mm
Thickness: 13.2 mm
Lug Width: 20 mm
Case Back: Screw case back, transparent case back
Crown: Screw-down crown
Dial:
Colour: Black
Markers: Applied indexes with Lumibrite
Hands: Lumibrite hands (hour, minute, and second)
Crystal: Sapphire crystal with anti-reflective coating on the inner surface
Bezel:
Type: Unidirectional rotating bezel
Material: Stainless steel with ceramic insert
Colour: Black
Markers: Minute markers on the bezel
Strap:
Material: Stainless steel bracelet with super-hard coating and tri-fold push button release clasp with secure lock, slide adjuster and diver extension
Width: 20 mm at lugs tapering to approximately 18 mm at buckle
Buckle: Tri-fold push button release clasp with secure lock, slide adjuster and diver extension
Water Resistance:
Rating: 200 meters / 660 feet (20 bar)
Additional Features:
Day/Date Display: Date display at the 3 o'clock position
Luminous Features: Lumibrite on hands and indexes for enhanced visibility in low light conditions
Warranty: 2-year international warranty
Included Accessories: Presentation box, instruction manual, warranty card
Weight: Approximately 194 grams