Seiko Cal. 5661 - 375

The Seiko 5661-375 represents an important milestone in Seiko's 1988 lineup. Powered by the 5661 caliber with 22j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-6ced9ccc6fc3]

Also known as: Turtle, Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1988

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