Seiko Cal. 4437 - 528

Seiko 4437-528

The 4437-528 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4437 caliber with 28j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-495c59434f7d]

Also known as: Panda, Bellmatic

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
36mm
Case Thickness
15.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Green
Jewels
28j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1994

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seikata-wm-495c59434f7d