Seiko Cal. 6397 - 677

The 6397-677 is a sought-after Solar piece from Seiko's golden era. Powered by the 6397 caliber with 21j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-54d26a2c38df]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1994

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