Seiko Cal. 6220 - 377

The 6220-377 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6220 caliber with 23j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-8eadf63f23c3]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1976

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