Seiko Cal. 6648 - 540

The 6648-540 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-da820cd84864]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1990

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