The Seiko Prospex SPB207J1 watch is designed to meet the challenges of the marine and underwater environment. It features a sturdy 42mm case, screw-down crowns, and water resistance up to 200 meters, making them suitable for diving activities. The watch is powered by an automatic mechanical movement with manual winding capability.

Movement
- Caliber: 6R35
- Movement type: Automatic with manual winding capability
- Accuracy: +25 to -15 seconds per day
- Power reserve: Approximately 70 hours
- Number of rubies: 24
- Functions: Second hand stop function

Case/Strap
- Case material: Stainless steel
- Case Size: Thickness:12.5mm / Diameter:42.0mm / Lug-to-lug:48.8mm
- Sapphire glass
- Glass Coating: Anti-reflection coating on the internal surface
- LumiBrite: LumiBrite on hands, indexes and bezel
- Clasp: Triple folding clasp with safety lock, push button release with extender
- Distance between the lugs: 20

Other details
- Water resistance: Underwater 200m/660ft
- Weight: 186.0
- LIMITED EDITION on the case back
- Unidirectional rotating bezel
- Screw-down crown
- Triple folding clasp with safety lock
- Screw back