Seiko Cal. 6649 - 536

The Seiko 6649-536 represents an important milestone in Seiko's 1977 lineup. Powered by the 6649 caliber with 19j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-5481223ed039]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

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