Audio-Technica ATH-ANC700BTBK Wireless Noise-Cancelling Headphones (Open Box) - Discontinued 2.5mm female Every HD 660S has experienced

Every HD 660S has experienced a matching regimen to mate each transducer to its opposite-channel counterpart

Stylish Carrying Pouch

Inner diameter (all sizes) = 4mm (can fit 5-6mm)

Charging case dimensions 68

Audio-Technica ATH-ANC700BTBK Wireless Noise-Cancelling Headphones (Open Box) - Discontinued 2.5mm female Every HD 660S has experiencedThe ATH ANC700BT QuietPoint wireless over ear headphones combine Audio Technicas proprietary active noise canceling technology with Bluetooth wireless technology and convenient touch and swipe controls built into the earcup: Tap earcup to answer calls, play pause music, and increase and decrease volume; swipe to skip to the next or previous music track. The headphones noise canceling functionality is driven by a four microphone (two in each earcup)