Seiko Cal. 6639 - 977

The Seiko 6639-977 represents an important milestone in Seiko's 1987 lineup. It features a Cream dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-34d102547ae7]

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1987

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