Seiko Cal. 4548 - 640

The 4548-640 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4548 caliber with 34j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-9e6381a4a4bd]

Also known as: Monster, Shogun

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1970

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