Seiko Cal. 5240 - 276

Seiko 5240-276

The Seiko 5240-276 represents an important milestone in Seiko's 1978 lineup. Powered by the 5240 caliber with 34j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-c8595f4758af]

Also known as: Monster, Sumo

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
13.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Green
Jewels
34j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1978

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