Seiko Cal. 6321 - 660

Seiko 6321-660

The 6321-660 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6321 caliber with 27j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-43db1edbd727]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
36mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Green
Jewels
27j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1990

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