Seiko Cal. 5618 - 780

The 5618-780 is a sought-after Solar piece from Seiko's golden era. Powered by the 5618 caliber with 28j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-d05277fd03f7]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1975

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