Seiko Cal. 3821 - 520

The 3821-520 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3821 caliber with 19j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-e34236f5812f]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1975

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