Seiko Cal. 6641 - 635

The Seiko 6641-635 represents an important milestone in Seiko's 1978 lineup. Powered by the 6641 caliber with 35j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-5c818412b460]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1978

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