Seiko Cal. 6635 - 971

The 6635-971 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6635 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-2bfc47aec55b]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1997

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