Seiko Cal. 6686 - 751

The 6686-751 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6686 caliber with 21j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-9c06f606ba29]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1965

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