Additional FeaturesWireless Bluetooth Streaming - Wirelessly stream high-quality sound from your smartphone or tablet,Rechargeable Battery - Built-in, rechargeable Li-ion battery supports up to 5 hours of playtime,Waterproof design - The IPX7 waterproof housing makes GO 2 perfect for worry-free listening by the beach or poolside, or even in it,Speakerphone - Enjoy crystal clear conference calls over your speaker with the noise free speakerphone.