Seiko Cal. 4437 - 988

The 4437-988 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4437 caliber with 17j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-0845dbc2cde5]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1970

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