Noise reduction with multimicrophone steerable array. BT600 Bluetooth USB dongle to connect to non Bluetooth Device Full duplex audio. Get more done and get in the groove—using this portable speakerphone + portable charger + high-performance music speaker, all in one. Bass reflex system with dual passive radiators for natural voice and deep bass. 20 hour battery life for working on the go IP64 dust- and water-resistant USB port to charge your phone Carrying case included