A portable stereo Bluetooth speaker, the Soundblade features voice confirmation. Dual passive radiators provide enhanced rich bass, and Altec's DSP Audio Enhancement technology optimizes music playback. Speaker also includes an onboard microphone for clear, hands-free communication. Built-in rechargeable Li-ion battery provides up to 8 hours of battery life. Two 1.5" full range neodymium drivers. A 3.5mm Aux-in connector adds more device compatibility. 2" x 6.2" x 2.4".