Seiko Cal. 4540 - 386

This Solar model from 1978 features a 41mm Two-Tone case. Powered by the 4540 caliber with 17j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-8b27e2050441]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1978

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