Seiko Cal. 6380 - 331

The 6380-331 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6380 caliber with 20j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-0e3441b57df9]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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