Seiko Cal. 5643 - 761

The 5643-761 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5643 caliber with 18j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-ea5d2d46dffe]

Also known as: Pogue, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1995

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