Seiko Cal. 5277 - 740

The Seiko 5277-740 represents an important milestone in Seiko's 1970 lineup. Powered by the 5277 caliber with 20j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-37700d3b241d]

Also known as: Tuna, Rally

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1970

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