Seiko Cal. 6340 - 657

The 6340-657 is a sought-after Solar piece from Seiko's golden era. Powered by the 6340 caliber with 27j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-44f938405c87]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1993

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