Seiko Cal. 4520 - 777

The Seiko 4520-777 represents an important milestone in Seiko's 1970 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-65e13c619515]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1970

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