Seiko Cal. 6371 - 654

The Seiko 6371-654 represents an important milestone in Seiko's 1986 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-16aeff08b11d]

Also known as: Sumo, Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1986

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