Seiko Cal. 3821 - 428

The 3821-428 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a19ec7480c35]

Also known as: Monster, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1986

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