Seiko Cal. 6645 - 659

Released in 1987, the Cal. 6645 with design code 659 was part of Seiko's domestic market collection. Powered by the 6645 caliber with 32j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-dba46ce39caa]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1987

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