Cabinet Material: Metal Audio Crossover: Full-Range Communication: AUX Communication: bluetooth Speaker Type: Portable Channels: 4 (3.1) Battery: Yes Origin: CN(Origin) Power Source: Battery Number of Loudspeaker Enclosure: 1 Input Power(W): <25 W Intelligent Personal Assistant: NONE Support Apt-x: Yes Waterproof: Yes Bluetooth Version: 4.2 Support APP: No Model Number: JBL CHARGE 4 Playback Function: mp3 Display Screen: No Sabwoofer cabinet material: Metal Certification: CE PMPO: 30W Output Power: 30W Remote Control: No Support Memory Card: No Material: Metal Display Screen: No Built-in Microphone: No Frequency Range: 60Hz-2.2KHz