Seiko Cal. 5661 - 715

The Seiko 5661-715 represents an important milestone in Seiko's 1998 lineup. Powered by the 5661 caliber with 30j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-d24997694da1]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1998

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