Seiko Cal. 4438 - 278

Seiko 4438-278

Released in 1982, the Cal. 4438 with design code 278 was part of Seiko's domestic market collection. Powered by the 4438 caliber with 23j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-c0783e98e27f]

Also known as: Monster, Sportsmatic

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
14.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Silver
Jewels
23j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1982

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seikata-wm-c0783e98e27f