Seiko Cal. 7121 - 327

The 7121-327 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7121 caliber with 30j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-0c0a8b7b171a]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1972

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