The Altec Lansing iMW577 Life Jacket 2 Bluetooth Wireless Speaker features great sound, voice confirmation, and an onboard microphone for clear, hands-free communication. The rugged jacket is IP67 Waterproof/Dustproof/Shockproof rated and it FLOATS! With 16 hours of battery life and power bank capability you can remotely charge your smartphone anywhere and rock out all day long.