Elala Portable Speaker, Bluetooth Speaker with Built-in 7000mAh Power Bank Loud Volume Enhanced Bass IPX4 Waterproof Speaker for Beach,Shower,Home (Black) Superior sound: Powered by dual 5W high-performance drivers and advanced bass enhancement tech. Enjoy crisp, energetic sound. Rugged speaker: Rugged and Durable, Water Resistant, Dust-tight, Shock-proof. Great for Outdoors. Bluetooth 4.0 : Advanced Bluetooth 4.0 + EDR tech is compatible with all Bluetooth-enabled devices (Bluetooth V2.1 and over) and 33ft range (outside), makes hands-free calls with built-in HD microphone. Superior battery performance: High capacity(7000mAh) allows music playtime up to 15 non-stop hours.Charging port allows you charge your phone quickly when you are outside.(iPhone7 2 times, the Galaxy S6 1.5 times). Package contents: Elala Portable Bluetooth speaker, 3.5mm audio cable, micro USB cable, instruction manual. 12-month warranty and friendly customer service.