Seiko Cal. 4464 - 635

The Seiko 4464-635 represents an important milestone in Seiko's 1971 lineup. Powered by the 4464 caliber with 23j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-b46ff221f2b0]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1971

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