Seiko Cal. 6634 - 540

The 6634-540 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6634 caliber with 25j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-feac7844e649]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1993

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