Seiko Cal. 6638 - 471

The Seiko 6638-471 represents an important milestone in Seiko's 1974 lineup. It features a Silver dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-91f38131b273]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1974

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