High-concerned chemical : None<br>Input/Output : AUX<br>Battery Capacity[mAh] : 1800<br>Number of devices connectable simultaneously : 2<br>Maximum wireless range[m] : 10m-20m<br>Sound Mode : 3D Surround Sound Mode,Stereo Sound Mode,Standard Mode<br>Category : Speakers<br>Use : Camping<br>Control : Volume control<br>Bluetooth Version : 5.0<br>Input Power(W) : 50-99 W<br>Active Noise-Cancellation : PASSIVE<br>Impedance : 2-4 Ohm<br>Wi-Fi Music : Apple Music<br>Voice Control : No<br>Frequency Range : 100Hz-20KHz<br>Waterproof : Yes<br>Support APP : No<br>Material : Plastic<br>Playback Function : MP3,FLAC,ape,Other,ALAC,WAV<br>Inbox adaptor : No<br>Intelligent Personal Assistant : None<br>Built-in Microphone : Yes<br>Audio Crossover : Full-Range<br>Number of Loudspeaker Enclosure : 2<br>Power Source : Battery<br>PMPO : 100 W<br>Channels : 3 (2.1)<br>Feature : Phone Function<br>Battery : Yes<br>Communication : AUX,USB,Bluetooth,Audio Line<br>Speaker Type : Portable<br>Cabinet Material : Plastic<br>Brand Name : Opansten<br>Power Source : Battery<br>Origin : Mainland China<br>Remote Control : No<br>Output Voltage : 100 W<br>Support Memory Card : Yes<br>Certification : CE<br>Function 1 : Car, desktop, fitness, outdoor, home, mobile and portable<br>Function 2 : K song, live broadcast, square dance, broadcasting system, outdoor law<br>Function 3 : Bluetooth connectivity<br>Function 4 : Card insertion, waterproof, lighting, dustproof, anti drop<br>Function 5 : Bluetooth version 5.1<br>Function 6 : IPX 2<br>Function 7 : TWS<br>Function 8 : USB flash drive/card insertion/Bluetooth<br>