Seiko Cal. 6616 - 423

Released in 1991, the Cal. 6616 with design code 423 was part of Seiko's domestic market collection. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-be7be3330108]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1991

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