JBL Partybox 310 Portable Party Speaker - Black. The item "JBL Partybox 310 Portable Party Speaker Black" is in sale since Monday, February 22, 2021. This item is in the category "Consumer Electronics\Portable Audio & Headphones\Portable Stereos & Boomboxes". The seller is "patfa_9081" and is located in Cleveland, Ohio. This item can be shipped to United States.