Also it introduces the features of BNT (Sodium bismuth titanate lead-free) replaced for traditional Piezoelectric ceramic speaker material (PZT) at last.

最后简单介绍了替代传统压电陶瓷扬声器材料(PZT)的无铅钛酸铋钠压电陶瓷扬声器(BNT)的材料特性。

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This technology replaces the phone's speaker with a ceramic actuator, which turns sounds into vibrations that travel through the body directly to the eardrum, making the phone audible even in loud environments.

ENGADGET: Kyocera Hydro Xtrm and Hydro Edge hands-on Mobile