Seiko Cal. 6677 - 306

Seiko 6677-306

The Seiko 6677-306 represents an important milestone in Seiko's 1978 lineup. Powered by the 6677 caliber with 31j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-5ca5b6e783b5]

Also known as: Bullhead, Navigator

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.1mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Black
Jewels
31j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1978

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