Seiko Prospex SPB315J1

General
- Model: SPB315J1
- Collection: Prospex Sea

Movement
- Caliber Number: 6R35
- Movement Type: Automatic with manual winding
- Precision: +25 to -15 seconds per day
- Power reserve: Approx. 70 hours
- Jewels: 24
- Functions: Stop seconds hand function, Date display

Case/Band
- Case Material: Stainless steel (super hard coating)
- Case Thickness: 12.3mm
- Case Diameter: 41.0mm
- Lug-to-lug: 46.9mm
- Crystal: Curved sapphire crystal
- Crystal Coating: Anti-reflective coating on inner surface
- LumiBrite: LumiBrite on hands, index(es) and bezel
- Clasp: Three-fold clasp with secure lock , push button release with extender
- Distance between lugs: 20mm

Other Details
- Water Resistance: 200m / 660ft diver's
- Magnetic Resistance: 4,800 A/m
- Weight: 156.0g
- Features: Screw case back, Unidirectional rotating bezel, Screw-down crown, Three-fold clasp with secure lock