Seiko Cal. 5684 - 681

Released in 1971, the Cal. 5684 with design code 681 was part of Seiko's domestic market collection. Powered by the 5684 caliber with 23j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-ea57a1bb0764]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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