A single speaker that packs crystal clear sound and surprisingly powerful bass to hear your music with depth and clarity into a portable, compact aluminum casing design. Vacuum bass design for surprising volume-to-size ratio. It collapses when not used and twist the top to expanded. Plug it in to smartphones, MP3 players, laptops, or any other audio device. Built in Li-ion battery that has 5 hours of playtime (at 70% volume). Includes a USB cable for quick charging. It has an on/off switch and has 2 ports in it:
Line-in: 3.5mm dual audio cable and audio/USB cable
DC 5V, with a USB/USB mini cable