Seiko Cal. 4596 - 648

Released in 1978, the Cal. 4596 with design code 648 was part of Seiko's domestic market collection. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-3970bf4daf4d]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1978

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