Iron Hammer Bluetooth Portable Speaker : Louder Volume with 10W+ Power, More Bass, Weatherproof IPX5 Wireless Shower Speaker (green) Full High-Def Sound--- Newest Bluetooth 4.0 technology provides stutter-free wireless music streaming and seamless high clarity audio. Built-in mic supports hands-free phone calls & outstanding bluetooth connection range of up to 30 feet for convenient wireless freedom. Survive the Elements--- IP Rated IP66 designed as a outdoor speaker and shower speaker - unique rugged square design with splashproof & shockproof & dustproof functions make it suitable for outdoor trip, shower, poolside speaker, beach party, water sports, and more. Long Battery Life & Powerful--- Installed rechargeable lithium-ion battery delivers up to 10 hours of playing time on a single charge. Incredibly Compact--- This ring box-sized Bluetooth speaker fits easily into your jacket small side pocket. Fast & Super Easy Connection--- It supports any Bluetooth-enabled devices and Aux-in function supports all digital audio devices with 3.5mm jack, such as iPhone, Samsung Galaxy/Note/Tablet, HTC, PDA, Tablet PC, iPod, iPad, Mac Air, MP3/MP4 players, Laptop, Computer, Notebook, etc.