Seiko Cal. 0777 - 638

Released in 1991, the Cal. 0777 with design code 638 was part of Seiko's domestic market collection. Powered by the 0777 caliber with 25j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-183baf4eab99]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1991

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