Seiko Cal. 6377 - 256

This Quartz model from 1971 features a 36mm Two-Tone case. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-62c6835daa84]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1971

Related Models

• Seiko 4522-598
• Seiko 7056-536
• Seiko 4542-342
• Seiko 0778-948
• Seiko 7178-853
• Seiko 0711-875
• Seiko 6224-124
• Seiko 6336-215
• Seiko 4416-337
• Seiko 5695-160
• Seiko 7121-468
• Seiko 0755-974