Brookstone Big Blue Live 2 Wireless Bluetooth NFC Speaker features built-in rechargeable battery with approximately 6 hours of playing time on a single charge. New NFC capability – simply touch NFC devices to Big Blue Live for instant wireless pairing. Compatible with Bluetooth enabled devices including iPod, iPhone, iPad, and Android as well as Blackberry devices. Connect two Big Blue Live 2 units together for left and right stereo sound with technology that communicates from the main Big Blue Live 2 speaker to the secondary Big Blue Live 2 speaker. The soft touch silicone control panel allows you to adjust volume, skip tracks, or power on & off. Wireless speakerphone capability allows you to take and share calls. Blue lights indicate power and pairing modes. Built-in lithium battery recharges via included USB cable. Playback time: approximately 6 hours. Charge time: approximately 4.5 hours. Brookstone box included.