The milwaukee m12 18 jssp 0 jobsite speaker is fitted with advanced bluetooth technology that allows you to connect any portable electronic device wirelessly from up to 30m away it is a premium jobsite speaker with bass port allowing it to offer loud clear sound at all volumes ip45 rated resistant to water and debris allowing it to withstand the tough conditions on and off the jobsite it also has a 21 amp usb port that charges phones tablets and media players bare unit no battery or charger sup