Seiko Cal. 6377 - 681

The Seiko 6377-681 represents an important milestone in Seiko's 1982 lineup. Powered by the 6377 caliber with 34j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-f7530dae8f97]

Also known as: Monster, Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1982

Related Models

• Seiko 5220-655
• Seiko 4428-338
• Seiko 6666-580
• Seiko 3856-628
• Seiko 6689-997
• Seiko 0732-916
• Seiko 6663-109
• Seiko 3845-876
• Seiko 6694-752
• Seiko 6644-156
• Seiko 6344-226
• Seiko 4443-407