Seiko Cal. 4540 - 256

The 4540-256 is a sought-after Solar piece from Seiko's golden era. Powered by the 4540 caliber with 28j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-9f6f77a08924]

Also known as: Navigator, Flighty

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1991

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