Seiko Cal. 6646 - 678

Seiko 6646-678

The 6646-678 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5016fb4f8700]

Also known as: Helmet, Flighty

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Silver
Jewels
24j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1995

Related Models

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