Seiko Cal. 5243 - 361

Seiko 5243-361

The 5243-361 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5243 caliber with 21j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-56f49d788db0]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
15.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
120m
Dial Color
Black
Jewels
21j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1996

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