Seiko Cal. 4541 - 646

Seiko 4541-646

The 4541-646 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4541 caliber with 23j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-a7973075d0a9]

Also known as: Helmet, Rally

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
37mm
Case Thickness
13.0mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Cream
Jewels
23j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1982

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seikata-wm-a7973075d0a9