Daicel-Evonik Ltd, a Tokyo-based company, announced that its clear polyamide (PA) was employed for Casio Computer Co Ltd's "G-Shock Skycockpit Series GW-A1000" and "Baby-G Neon Dial Series" wristwatches.
The polyamide, which Daicel-Evonik calls "Torogamido," is used for the "Flight Composite Band," a newly designed band part with high impact and abrasion resistances.
The selling point of the GW-A1000 is its high durability. And it was designed so that it can be used by airplane pilots. While the durability of its band is as high as those of Casio's bands made only of metals, its weight is much lighter.
Though a metal is used inside a part used for band connection, the surface of the band is made of resin. As a result, the weight of the "GW-1000FC," which is equipped with the Flight Composite Band, is 118g, which is lighter than the weight of Casio's "GW-A1000D" (157g), which has a metal band and was released in April 2012.
The Torogamido is transparent. But when it is colored, its transparency contributes to improving the color. Because it also has high chemical and oil resistances, it can maintain its appearance and physical properties for a long period of time even when it is used for a band, Casio said.