Seiko Cal. 6398 - 761

The 6398-761 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6398 caliber with 29j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-25e4bf6a7a14]

Also known as: Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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