Satechi SX2 Speakers are stylish, palm sized yet big in bass and volume. Extendable resonance of the bass box technology enables a strong clear sound. You can plug them in any audio source that uses a standard 3.5 mm plug, like the headphone jack on your MP3 player. They"re perfect for home, office, or when traveling. Experience your movies, music, and games with full rich sound!Portable Design Built-in magnetic lock secures two-piece speakers into one when not in use. The strikingly attractive, unique design fits snugly into a provided carry pouch between uses.Dynamic Sound Armed with the signature Bass Expansion System, the nifty speakers extend to amplify dynamic audio range without compromising on acoustic integrity.Audio Connection Plug and play with any of your mobile devices that have a 3.5mm headphone jack - iPod, iPhone, iPad, MP3 players, tablets, laptops, netbooks, music phones and more.Series Connection Connect a row of Satechi SX2 Speakers to get jaw-dropping audio.USB Charging With long-lasting lithium-ion rechargeable batteries built in, the Satechi SX2 Speaker gives you plenty of playback time. When you do need a charge, grab the included USB cable and connect to any USB charger or USB port on your computer.What"s in the Box Satechi SX2 Speakers, Audio & Charging Cable, Carry Pouch, User"s Manual