We've got just the thing for the person who's got everything: the Alpine Solar Bluetooth Enabled Rock Speaker. It's more than just a solar-powered rock. It's a convenient solar-powered speaker for any outdoor area! Crafted with weather-resistant materials, this rock-speaker is lightweight and portable. Bluetooth 4.0 capability with 50-foot range allows you to broadcast from the phone in your pocket. Imagine the prank possibilities! Works with most Apple, Android, or Windows devices with Bluetooth capability.