Seiko Cal. 7150 - 331

The Seiko 7150-331 represents an important milestone in Seiko's 1999 lineup. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-dc7f2c901083]

Also known as: Bullhead, Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1999

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