Seiko Cal. 7031 - 216

The 7031-216 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7031 caliber with 32j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-b9563f66bbbd]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1991

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