S11 Bluetooth Wireless Mini Portable Subwoofer Surround Stereo Speaker Auto Handsfree Outdoor Audio Speakers in Car With Rechargeable Battery And TF Card For Desktop, Laptop, iPhone 6, iphone 6 plus,Samsung Galaxy S5 S4 (Blue) Bluetooth compatibility - Quickly syncs and automatically pairs to your device in seconds Super bass - Featuring big, rich, full lows that will make you wonder how they got so much sound out of such a little package Built-In microphone - Allows you to talk through the speaker for hands free calling. Ultra portable - Place it on your desk or any indoor or outdoor surface. Perfect for the beach, parties, camping, BBQ's & bonfires Extended playing time - The rechargeable, high capacity battery allows for one of the longest play times per single charge available on the market