Seiko Cal. 6645 - 854

The 6645-854 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6645 caliber with 21j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-43cc30097a13]

Also known as: Turtle, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1990

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