Equipped with Bluetooth, FM, USB, TF card, and microphone input, DC-5V charging via Type-C port, USB 5V boost output, no remote control, built-in lithium battery protection, external microphone holder, single power amplifier, potentiometer for volume control, and box-to-box function. Features light effects controlled by MODE button (short press to switch light mode, long press to change function). Functional parameters: Speaker specification: 6.5 inches x 2 Power: 20W (P.M.P.O: 2000W) Battery: 18650 / 3.7V / 2400mAh Product dimensions: 222 x 199 x 481mm Material: Plastic Color: Black Package Contents: 1 x Outdoor Bluetooth Speaker 1 x Microphone 1 x USB Cable Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual product. Measurement error allowed is +/- 1-3cm.