Seiko Cal. 6634 - 778

Seiko 6634-778

The 6634-778 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6634 caliber with 32j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-e64f7925a160]

Also known as: Helmet, Silverwave

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
45mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Navy
Jewels
32j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1999

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seikata-wm-e64f7925a160