Seiko Cal. 4438 - 591

Seiko 4438-591

The 4438-591 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-f592cbb3b728]

Also known as: Panda, Helmet

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
39mm
Case Thickness
12.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Champagne
Jewels
29j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1965

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