Seiko Cal. 7137 - 630

The Seiko 7137-630 represents an important milestone in Seiko's 1991 lineup. Powered by the 7137 caliber with 20j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-fd792784e939]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1991

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