Seiko Cal. 5237 - 678

The Seiko 5237-678 represents an important milestone in Seiko's 1967 lineup. Powered by the 5237 caliber with 26j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-b9e49492b688]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

Related Models

• Seiko 4574-386
• Seiko 3823-101
• Seiko 6394-361
• Seiko 6157-292
• Seiko 6689-590
• Seiko 4456-708
• Seiko 0760-627
• Seiko 5684-974
• Seiko 4542-371
• Seiko 6198-497
• Seiko 4536-828
• Seiko 4490-105