Seiko Cal. 4560 - 156

The Seiko 4560-156 represents an important milestone in Seiko's 1970 lineup. Powered by the 4560 caliber with 23j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-c20dc5322367]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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