Seiko Cal. 4438 - 772

Seiko 4438-772

The Seiko 4438-772 represents an important milestone in Seiko's 1970 lineup. Powered by the 4438 caliber with 27j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-338352decd53]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
10.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Silver
Jewels
27j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1970

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seikata-wm-338352decd53