Crusher Tech: What is it? Use the sensory bass slider to enhance your bass, or go all skull crushing! Crusher Tech improves the sound quality of your computer, iPhone, or Android device. Listen to songs the way they were intended to be heard—feel the bass tuned to you. The Crusher Evo's Personal Sound feature analyzes your hearing and creates sound just for you. 40 hours of playback time on a single fat battery. Additionally, using the included USB-C cable, Rapid Charge technology allows you to get four hours of charge in ten minutes. Alternatively, use the 3.5mm audio cable to always be connected. Thanks to built-in tile technology, you won't ever lose your headphones again. Use the Tile App to locate your headphones in real time. Contains a