Altec Lansing Music Speaker Compatibility: all iPods, MP3 players, CD players, laptops Ultra-portable speaker produces full-bodied, 360-degree sound Long battery life provides up to 24 hours of play on 3 AAA batteries (not included) Smartly designed integrated cable management system; shock-resistant, rugged design that's perfect for travel Projects music in all directions for full stereo experience; special feature lets you direct music to single listener