Seiko Cal. 7052 - 840

The Seiko 7052-840 represents an important milestone in Seiko's 1968 lineup. Powered by the 7052 caliber with 19j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-201316768a9e]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1968

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