CONVENIENT WIRELESS DESIGN: The headset amplifier works anywhere, and can be worn comfortably throughout the day - whether at home or at the office. EFFECTIVELY REDUCED BACKGROUND NOISE: The noise canceling amplifier improves audio quality with the built-in 2.4G wireless noise-canceling and voice clarifying circuitry. TESTED FOR A MORE COMFORTABLE EXPERIENCE: The TV headset features ASC (Automatic Signal Control) technology that regulates sound waves for a smoother and more satisfying listening experience. RECHARGEABLE BATTERY: The amplifier wireless features a built-in rechargeable battery that allows you to charge the headset with the included docking station. BUILT-IN MIC: The digital headset features a built-in microphone, which can be used for telephone and smartphone calls. The system also includes a clip-on microphone extension cable. Connectivity technology: Bluetooth