Seiko Cal. 5644 - 674

The Seiko 5644-674 represents an important milestone in Seiko's 1976 lineup. Powered by the 5644 caliber with 24j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-f425224f09fd]

Also known as: Panda, Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1976

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