Seiko Cal. 7155 - 320

The Seiko 7155-320 represents an important milestone in Seiko's 1992 lineup. Powered by the 7155 caliber with 30j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-51f2ac0b389a]

Also known as: Bullhead, Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1992

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