Opteka Portable Wireless Bluetooth Speaker with Built-In Speakerphone & 4 Hour Rechargeable Battery (Silver) Bluetooth v3.0 allows you to connect wirelessly up to 35 feet away. Works with all Bluetooth-enabled devices such as smart phones, tablets and laptops. Seamlessly stream and share music, movies, games, phone and conference calls anywhere. Built-in Li-Ion battery rechargeable for up to 4 hours of wireless play. 3.5mm Audio Line In - Don't have Bluetooth? The Ph-1000 allows you to connect the speaker directly to a standard headphone jack.