Seiko Cal. 6641 - 425

Released in 1988, the Cal. 6641 with design code 425 was part of Seiko's domestic market collection. Powered by the 6641 caliber with 35j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-d9fb16aa10c6]

Also known as: Rally, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1988

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