Seiko Cal. 4571 - 431

This Spring Drive model from 1990 features a 37mm Stainless Steel case. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-afd047fe7e98]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1990

Related Models

• Seiko 6639-515
• Seiko 6698-138
• Seiko 7167-952
• Seiko 4411-269
• Seiko 4599-500
• Seiko 5259-565
• Seiko 3854-320
• Seiko 4449-371
• Seiko 6169-774
• Seiko 7057-611
• Seiko 3861-548
• Seiko 4420-115