Seiko Cal. 6624 - 639

The 6624-639 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6624 caliber with 35j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-2dd978014aa4]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1968

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