Seiko Cal. 5221 - 636

The 5221-636 is a sought-after Solar piece from Seiko's golden era. Powered by the 5221 caliber with 27j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-009306f5d9be]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1986

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