Seiko Cal. 7131 - 389

This Hand-Winding model from 1981 features a 45mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8132fa26640d]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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