Features & Benefits
- SEIKO 5 has 5 attributes: Automatic, Water resistant, Shock resistant, Date, Day
- SEIKO 4 uses Caliber 7S25 with omission of Day function
- SEIKO 5 Sports often use 7S36 caliber with 23 Jewels
- All these movements beat at a rate of 21'600 bph
- An automatic watch winds by motion of the wearer, not manually
- Case Size: 41.7 mm Diameter, 12.7 mm Thickness, Water Resistant - 10 ATM