Seiko Cal. 6615 - 538

The Seiko 6615-538 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-79fb918dcca6]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1968

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