Seiko Cal. 4538 - 777

Seiko 4538-777

This Kinetic model from 1971 features a 44mm Hardlex-Coated Steel case. Powered by the 4538 caliber with 27j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-96a24f49c14c]

Also known as: Sumo

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
13.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Silver
Jewels
27j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1971

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