Bluetooth connectivity lets you stream wirelessly from compatible devices for seamless playlist sharing Compact size makes it easy to bring along anywhere Built-in battery allows for up to 12 hours of use on one charge 40W speaker delivers superior Harman Kardon sound with powerful bass IP67 waterproof and dustproof design keeps it safe from splashes and dust Pair two Luna speakers for impressive stereo sound Made in part with 100% recycled polyester yarn, 85% recycled plastic, and 50% recycled aluminum