Seiko Cal. 6639 - 957

The Seiko 6639-957 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-7f6af02cde74]

Also known as: Panda

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1984

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