Seiko Cal. 7138 - 403

Seiko 7138-403

The 7138-403 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7138 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-560f981b1ef2]

Also known as: Sumo, Crown

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1970

Related Models

seikata-wm-560f981b1ef2