SOUL STORM - Outdoor Waterproof Wireless Speaker with Bluetooth. Powerful, Portable and Floatable. Storm Black SMALL IN SIZE, BIG ON SOUND: A compact, palm sized speaker with 5W of output power deliverying full range and lifelike sound. COMMUNICATION: Built-in microphone and call-answer button allows you to answer phone calls from the speaker. iPhone and Android match well. 8 HOURS OF PLAYTIME: Li-ion Polymer. Up to 8 hours playback time for your wireless music and calls. Charge and play in just 3 hours via the Micro-USB port. WEATHERPROOF: Adhere to the IP67 protection standard, the STORM is a perfect outdoor companion, it even works in rain and snow. CUSTOMIZED CARABINER: Equipped with a carabiner that allows you to latch on to anything to keep your music on-the-go.