Seiko Cal. 6620 - 712

The 6620-712 is a sought-after Solar piece from Seiko's golden era. Powered by the 6620 caliber with 29j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-a1b6d300f3bf]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1990

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