Seiko Cal. 6645 - 363

The 6645-363 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6645 caliber with 23j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-95fc00580bb3]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1994

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