Incredible sound quality from a small package. At less than 3inches tall, you'll be amazed at the sound. Exclusive Jam2 feature allows you to pair a second Jam Plus speaker for true stereo sound. Works wirelessly up to 30-feet away. Stop hassling with wires and cords. Works with all Bluetooth-enabled devices: smart phones, tablets and most notebooks. Line-in port for connecting non-Bluetooth devices. Rechargeable lithium-ion battery for up to 6 hours of wireless play - no need to buy batteries.