Seiko Cal. 5690 - 438

The Seiko 5690-438 represents an important milestone in Seiko's 1966 lineup. Powered by the 5690 caliber with 27j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-2ce82c7cd3ed]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1966

Related Models

• Seiko 5617-605
• Seiko 3839-460
• Seiko 6615-447
• Seiko 6360-778
• Seiko 5268-234
• Seiko 5692-760
• Seiko 3836-666
• Seiko 6217-373
• Seiko 6181-903
• Seiko 5274-286
• Seiko 6385-767
• Seiko 0724-421