Seiko Cal. 6238 - 740

The Seiko 6238-740 represents an important milestone in Seiko's 1975 lineup. Powered by the 6238 caliber with 29j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-134a8558c5d6]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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