Seiko Cal. 7156 - 745

This Automatic model from 1977 features a 42mm PVD Black case. Powered by the 7156 caliber with 21j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-4271b833262f]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1977

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