Seiko Cal. 6638 - 417

The Seiko 6638-417 represents an important milestone in Seiko's 1981 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-f61595e2a3e5]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1981

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