Diverse Functions: Supports dual solar charging, faster charging, and more convenient outdoor use; dual speaker design, sufficient volume, good sound quality, enjoy the fun of music; dual antennas, more stable reception, more choices, more comfortable to use. Easy Carry: small size, easy to carry outdoors, smoother travel. : aircraft carrier shape, unique appearance design concept. Model:DV-880 Input/Output:USB Number of devices connectable simultaneously:1 Maximum wireless range[m]:10m-20m Touch Screen:no Sound Mode:3D Surround Sound Mode,Stereo Sound Mode,Smart Sound Mode,Extra Bass Mode,Standard Mode Category:Speakers Use:Camping Sensivity:75dB Control:Volume control Bluetooth Version:5.3 Input Power(W):25-49 W Wi-Fi Music: Music Voice Control:No Frequency Range:100Hz-20KHz Display Screen:No Waterproof:No Support APP:No Support Memory Card:Yes Playback Function:Radio,mp3,FLAC,WAV Remote Control:No Intelligent Personal Assistant:none Display Screen:No Audio Crossover:Full-Range Power Source:Battery Channels:2 (2.0) Feature:Play Video,Wireless subfoofer Communication:USB,bluetooth,Audio Line Speaker Type:Portable Colour:black Material:plastic Package Contents: 1 * Bluetooth Speaker 1 * Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.