Seiko Cal. 4540 - 366

The 4540-366 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-a94a4ac9dcf3]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1987

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