Seiko Cal. 6340 - 607

This Spring Drive model from 1966 features a 43mm Two-Tone case. Powered by the 6340 caliber with 21j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-7c265895dc1a]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1966

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