Mobocell High Quality Powerful Mini Portable Bluetooth Speaker with Built-in Microphone Hands-Free Go anywhere, go wireless, high-quality music sound With a powerful built-in microphone, Hands-Free It frees you to share crisp, clean-sounding conference calls anywhere-in the office, car, at home, alone it with group Bluethooth V3.0+EDR compliant Operating distance 33ft, Rechargeable, Standby time: up to 300 hours