Seiko Cal. 6380 - 660

The 6380-660 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6380 caliber with 19j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-fec13aebe5c7]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1994

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