Seiko Cal. 4520 - 377

The Seiko 4520-377 represents an important milestone in Seiko's 1979 lineup. Powered by the 4520 caliber with 25j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-766d2a44c179]

Also known as: Rally, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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