Rechargeable speaker twists open to project sound and additional base. Wirelessly connects to Bluetooth & NFC enabled mobile devices. NFC capability – simply touch NFC devices to the speaker for instant pairing. Bluetooth operating distance of up to 30 feet. Speakerphone feature. Built in lithium battery recharges via included USB cable. Charging time: 1.5 hours. Playback time: 2.5 hours. Gift box included