Seiko Cal. 6615 - 313

The 6615-313 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6615 caliber with 17j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-19da7b3aff59]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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