Tmvel Masti Ultra Portable Wireless Bluetooth Speaker with Built-In Speakerphone and 10 Hour Rechargeable Battery - Retail Packaging - Black New Bluetooth v3.0 Technology allows you to Connect wirelessly up to 33 feet away. Seamlessly stream and share music, movies, games, phone and conference calls anywhere. Premium Sound with Bass Enhance Technology. Two powerful 40mm Drivers deliver crisp clean sound with deep bass Built-in Li-Ion Rechargeable Battery for up to 10 hours of playtime. Built-in microphone for hands-free speaker phone calling 3.5mm Audio Line In - Don't have Bluetooth? The Masti Speaker allows you to connect the speaker directly to a standard headphone jack. Easy to pair - No code/pin needed - Shows as WS-701B Speaker