Seiko Cal. 5243 - 510

Seiko 5243-510

The 5243-510 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5243 caliber with 30j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-d79deab789b6]

Also known as: Sumo, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
39mm
Case Thickness
11.0mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
50m
Dial Color
White
Jewels
30j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1970

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