Seiko Cal. 3821 - 531

The 3821-531 is a sought-after Solar piece from Seiko's golden era. Powered by the 3821 caliber with 32j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-725f70390895]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1976

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