Seiko Cal. 5263 - 439

Seiko 5263-439

The Seiko 5263-439 represents an important milestone in Seiko's 1978 lineup. Powered by the 5263 caliber with 26j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-b3baa5986f23]

Also known as: Tuna, UFO

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
42mm
Case Thickness
10.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Navy
Jewels
26j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1978

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