Seiko Cal. 6250 - 644

The Seiko 6250-644 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8e3fe9a49450]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1976

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