Reimagined from the inside out, the Koss KPH30 Wireless features breathtaking high-fidelity audio from 15-25,000 Hz. Built on an all-new, sophisticated design that stays true to the original KPH30i aesthetic, KPH30 Wireless introduces a redesigned headband and Patent Pending suspension built for increased strength, durability, and all-day comfort. Integrated audio controls and a built-in microphone make it easy to take calls, control your music, or activate your device’s voice assistant and for even more flexibility, KPH30 Wireless features Analog Audio Pass Through when paired with the optional KUSB-50 cord (sold separately), giving you the freedom to switch between wireless and wired listening with ease. With up to 20+ hours of battery life and USB-C charging, KPH30 Wireless is built to keep up with your day from morning to night, delivering The Sound of Koss anywhere you go.