Amazon.com: RAIACE Hard Travel Case for JBL Tune 710BT / JBL Live 650BTNC/ 400BT / 500BT and JBL Tune 510BT / 500BT / 660 BTNC / Bluetooth Headphone.-Gray(Gray Lining) : Electronics
Geekria Headphones Case Pouch For JBL Tune 510BT Tune 660 BTNC 400BT Wireless Bluetooth Earphones Bag For Gaming Accessories - AliExpress
JBL Tune 660 Bluetooth Noise Cancelling Headphones - Black | Accessories at T-Mobile for Business
JBL Tune 660NC review: a no-brainer on a budget | T3
Geekria Shield Headphones Case Compatible with JBL E45BT, Tune 510BT, Tune 660 BTNC, Live 400BT, Tune 560BT Case, Replacement Hard Shell Travel Carrying Bag with Cable Storage (Red) - Walmart.com