Seiko Cal. 3864 - 787

Released in 1998, the Cal. 3864 with design code 787 was part of Seiko's domestic market collection. Powered by the 3864 caliber with 24j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-eafb4a524068]

Also known as: Sumo, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1998

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