Seiko Cal. 4540 - 737

Seiko 4540-737

This Hand-Winding model from 1969 features a 44mm Titanium case. Powered by the 4540 caliber with 35j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-4a04ebcd5819]

Also known as: Turtle

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
44mm
Case Thickness
12.9mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1969

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seikata-wm-4a04ebcd5819