DeWalt’s Jobsite Bluetooth Speaker can run on either a 12V MAX or 20V MAX lithium ion battery, or AC power via an AC adaptor (sold with speaker). The speaker includes one auxilliary and one USB power port. The unit includes the newest version of Bluetooth (4.0) and two 2 1/2” speakers. It is designed with an easy-to-use interface including an LED light bar with large rubber buttons, making them easy to push while wearing work gloves. The unit also includes a mute button and an automatic shut-off feature.