Seiko Cal. 5638 - 974

The 5638-974 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5638 caliber with 18j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-1717f230c7de]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1990

Related Models

• Seiko 5696-159
• Seiko 6659-389
• Seiko 5629-871
• Seiko 7162-390
• Seiko 6355-270
• Seiko 5684-434
• Seiko 7198-434
• Seiko 6187-415
• Seiko 5681-518
• Seiko 0771-665
• Seiko 3885-658
• Seiko 4491-857