Seiko SPB405J1
| Movement Type | Automatic with manual winding |
| Power Reserve | Approx. 72 hours(3 days) |
| Functions | Stop second hand function |
| Case Material | Stainless steel (super hard coating) |
| Case Thickness | 11.6 mm |
| Case Width | 40.2 mm |
| Case Material | Stainless steel (super hard coating) |
| Crystal | Dual-curved sapphire crystal |
| Water Resistance | 10 bar |
| Features | Urushi lacquer dial; See-through & Screw case back |