Simple Audio Go Compact Rechargeable Bluetooth Speaker (90B0001-US) Compact design fits easily in your bag or backpack so you can take your music anywhere Full-range speakers and tuned bass port deliver surprisingly big sound from a small speaker Bluetooth 3 stereo support (A2DP) works with virtually any smartphone or tablet to let you wirelessly connect and stream your favorite music. Built-in rechargeable battery lasts up to 8 hours and you can plug your Go into the include AC adapter or any USB port to charge it. Includes an integrated microphone so when you connect your smartphone using Bluetooth, it doubles as a conference phone Includes a fabric carrying case that protects your speaker and even has a convenient pocket for the charging cable 2 year limited warranty