Seiko Cal. 6620 - 834

The 6620-834 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6620 caliber with 23j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-a5679fd7d2c1]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1966

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