Meet the Jabees WHALE Bluetooth IPX7 Waterproof Outdoor Portable Speaker: Your perfect companion for non-stop music and adventures. Immerse yourself in exceptional sound: Dual full-range drivers and dual bass radiators deliver powerful 30W stereo sound. 15 hours of battery life: Enjoy your music for extended periods without recharging. Built-in power bank: Charge your phone and other devices directly from the speaker's battery. IPX7 waterproof and adventure-ready. Portable and versatile with a removable shoulder strap. Double the fun with wireless technology: Pair two speakers together to boost audio power up to 60W.