Seiko Cal. 6387 - 318

The 6387-318 is a sought-after Solar piece from Seiko's golden era. Powered by the 6387 caliber with 36j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-ab36b8d3f12a]

Also known as: Bullhead, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1979

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