Seiko Cal. 4540 - 581

Seiko 4540-581

The Seiko 4540-581 represents an important milestone in Seiko's 1994 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-5c2a75932912]

Also known as: Turtle, Shogun

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
11.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Silver
Jewels
24j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1994

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seikata-wm-5c2a75932912