Seiko Cal. 4577 - 660

The Seiko 4577-660 represents an important milestone in Seiko's 1976 lineup. Powered by the 4577 caliber with 31j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-725663be1335]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1976

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