ISOUND ISOUND-5204 Crescent Bluetooth Speaker Black • High Performance Wireless Speaker Built-In Microphone For Calls • Bluetooth(R) Receiver Wirelessly Streams Music To Any Speakers • Connects Wirelessly Via Bluetooth(R) Or Wired Via 3.5Mm Audio Cable • Transmission Range Up To 33 Ft • Play/Pause, Volume & Phone Controls • Ultra-Compact • Output 3W Max • Impedance: 4Ohm • Driver Size: 1.5 Inch • Power Input: Usb 5V • Black