Seiko Cal. 6638 - 849

The Seiko 6638-849 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-82d5475632a3]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1974

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