Faktor Zwei 810408. RMS rated power: 4 W, Impedance: 4 Ом. Connector(s): 1x 3.5mm M, 1x USB M. Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 6 h. Type: Portable speakers, Audio output channels: 2.0, Power source type: USB This is an auto-generated long summary based on the first three features of the first five feature groups.