Seiko Cal. 6615 - 721

This Solar model from 1969 features a 37mm PVD Black case. Powered by the 6615 caliber with 27j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-59dbb5e8d2b2]

Also known as: Bullhead, Arnie

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1969

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