Seiko SPB183J1
| Movement Type | Automatic with manual winding |
| Power Reserve | Approx. 70 hours |
| Functions | Stop second hand function, Date display |
| Case Material | Stainless steel |
| Case Thickness | 13.2 mm |
| Case Width | 42.7 mm |
| Case Material | Stainless steel |
| Crystal | Curved sapphire crystal |
| Water Resistance | 200m / 660ft diver's |
| Weight | 180 g |
| Features | LIMITED EDITION on the case back; Serial number engraved on the case back; Unidirectional rotating bezel; Screw-down crown; An additional silicone strap is included; Screw case back |