Seiko Cal. 4539 - 978

Seiko 4539-978

Released in 1978, the Cal. 4539 with design code 978 was part of Seiko's domestic market collection. Powered by the 4539 caliber with 36j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-3a335478d45a]

Also known as: Sumo, Silverwave

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
36mm
Case Thickness
12.4mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Champagne
Jewels
36j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1978

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seikata-wm-3a335478d45a