sjcckj 16" 2.0 channel bluetooth computer speakers, wired and wireless home theater surround speaker with built-in subwoofers for cell phone, tablet and projector(remote control included) sjcckj <b>sjcckj 5.0 bluetooth computer speakers - with subwoofer stereo sound, the 360° 3d surround sound stereo feature would bring you a fantastic home theater surround sound experience and take your entertainment journey up to a new level. make you have a wonderful hearing experience.</b><br> <br> 1. bluetooth version: bluetooth 5.0. supporting format: hsp, hfp, a2dp, avrcp<br> <br> 2. bluetooth transfer distance:10m (the distance depends on the bluetooth device and environment)<br> <br> 3.four kinds of ways connection:<br> √ bluetooth mode: bluetooth core specification 5.0, supports hsp, hfp, a2dp, avrcp format. english language instruction provided. <br> <br> √ audio link mode: connect the speaker with 3.5mm audio line. speaker will connect automatically. now you can enjoy music from connected devices such as mobile phone, tv, pc and more.<br> <br> √ tf card mode: turn on the speaker, it will be on bluetooth mode automatically, insert tf card, speaker will be on tf card play mode.( important note: insert tf card prior to turning on the speaker. turn on speaker only if tf card is inserted. speaker will be automically on tf card mode.)<br> <br> √ usb-dac function: most computers and laptops can work this usb-dac function normally, other than few old personal computers and laptops.<br> <br> <b>product specifications:</b><br> output power : 5w x 2<br> built-in lithium battery: 3.7 v, 2000 mah<br> power supply : dc 5 v<br> impedance: 4 ohm<br> frequency range : 100 hz - 18 khz<br> dimension : 16 x 2.55 x 2.55 inch<br> product weight: 1.54 lb<br> interface: aux/rca/usb output<br> <br> <b>packing include:</b><br> 1 x bluetooth soundbar speaker<br> 1 x usb power cable<br> 1 x audio cable<br> 1 x rca cable<br> 1 x user manual<br> 1 x remote controller<br>