Seiko Cal. 5221 - 170

Released in 1976, the Cal. 5221 with design code 170 was part of Seiko's domestic market collection. Powered by the 5221 caliber with 34j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-cde1bd9f0994]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1976

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