Seiko Cal. 5661 - 158

The Seiko 5661-158 represents an important milestone in Seiko's 1992 lineup. Powered by the 5661 caliber with 21j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-5e08ac19d796]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1992

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