Bluetooth 4.0 technology for faster transmits speed, Effective wireless operating distance is up to 10m. Metal shell protective and super bass loss-less sound create a high-quality listening experience. Noise cancellation function wireless capacitive microphone, Bluetooth wireless design for connecting to any Bluetooth enabled smart devices. Battery: Li-Polymer 3.7V/2600mAh Material: Aluminum + ABS Controls: Bass, treble, volume, music and echo. Compatible to IOS and Android Phone (Ready Switch) Compatible to Audio Wire connection speaker mic High Quality