Seiko Cal. 6615 - 660

The Seiko 6615-660 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-1531af751474]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1977

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