Seiko Cal. 5677 - 131

The Seiko 5677-131 represents an important milestone in Seiko's 1984 lineup. It features a White dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-ada878fa3c5a]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1984

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