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Factory Warranty
All Orders Come With Manufacturer's Full Factory Warranty
Customer Service
U.S. Based, Full-Time Customer Service Team
Financing
Monthly Financing Available
Reference
EFK-100CD-1A
Case Size
39 mm
Case Height
12.5 mm
Lug To Lug
43.5 mm
Water Resistance
100m
Movement
Automatic
Case Back
See-through, screw lock
Case Material
Stainless steel
Clasp / Buckle
One-touch 3-fold clasp
Crystal
Sapphire
Dial Color
Grey
Dial Features
Forged carbon grey
Strap / Bracelet Material
Stainless steel bracelet
Weight
148 g
Accuracy
Mean daily rate: -35 to +45 seconds
Caliber
Seiko NH35A
Features
Magnetic resistant
Functions
Date and hacking function
Jewels
24 Jewels
Movement
Automatic with manual winding
Power Reserve
40 Hours
Vibrations Per Hour
21,600 vph
Casio’s story begins with Tadao Kashio, born in 1917 in Kochi Prefecture, who later founded Kashio Seisakujo in 1946 after training as a skilled machinist. Together with his brothers, he developed inventive products such as the Yubiwa pipe before revolutionizing office technology with the 1957 release of the 14-A, the world’s first compact all-electric calculator. This milestone launched Casio Computer Co., Ltd., and set the foundation for a global legacy rooted in creativity, family, and innovation.
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