Seiko SSA425J1
| Movement Type | Automatic with manual winding |
| Power Reserve | Approx. 41 hours |
| Functions | 24-hour hand, Stop second hand function |
| Case Material | Stainless steel |
| Case Thickness | 12.8 mm |
| Case Width | 40.8 mm |
| Case Material | Stainless steel |
| Crystal | Box-shaped Hardlex |
| Water Resistance | 5 bar |
| Weight | 140 g |
| Features | See-through & Screw case back |