Seiko Cal. 6620 - 394

The Seiko 6620-394 represents an important milestone in Seiko's 1971 lineup. Powered by the 6620 caliber with 27j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-975762583d2b]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1971

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