Seiko Cal. 4556 - 177

The Seiko 4556-177 represents an important milestone in Seiko's 1981 lineup. It features a Silver dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-dce4d510559e]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1981

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