High Efficiency and Eco-friendly Advanced Bluetooth Wireless Technology That Is Forward/backward Compatible to All Bluetooth-enabled Media Player Devices.Intuitive Built-in Mic and Dedicated Control Buttons for 6 Hours of Wireless Music Streaming.Full Featured Ergonomic Human Engineering Design with Re-enforced Detachable Suction Cup, Water-resistant HD Loudspeaker, and Splash-proof Surface to Increase Mobility and Usability for Everyday Indoor or outdoors Use.