The JBL Tune 660NC Wireless Headphones in black feature a frequency range of 20 Hz - 20 kHz and 32 mm drivers. They have a double earpiece design and are suitable for studio monitoring, DJ use, and general and live monitoring. The headphones offer Bluetooth connectivity, active noise canceling, volume control, a built-in microphone, and a rechargeable battery. They also have a foldable design, a detachable cable, and a USB-C connection.