Seiko Cal. 0720 - 186

The 0720-186 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0720 caliber with 27j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-54a5f8a12504]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1977

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