Seiko Cal. 5620 - 644

Seiko 5620-644

The Seiko 5620-644 represents an important milestone in Seiko's 1975 lineup. Powered by the 5620 caliber with 31j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-33100d8cc883]

Also known as: Helmet, Sea Horse

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Green
Jewels
31j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1975

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seikata-wm-33100d8cc883