The 5-in-1 Travel Sound is a portable audio bundle featuring a compact speaker, headphones, ear buds, ear bud organizer and audio splitter. The lightweight, folding design and battery or USB power mean you can enjoy your music anywhere. Use the headphones or ear buds to connect directly to any audio device with a 3.5 mm headphone jack. The audio splitter allows you to use two pairs of headphones or ear buds to share your music without disturbing others. Uses 4 AA batteries.