Seiko Cal. 5610 - 721

The Seiko 5610-721 represents an important milestone in Seiko's 1996 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-0b51e22d9dfe]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1996

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