NGS Black Flash Light 2.0. System type: 2.0 system, Recommended usage: universal, Speaker placement: Portable. RMS rated power: 4 W, Frequency range: 120 - 18000 Hz, Impedance: 4 Ом. Connectivity technology: Wired, Speaker interface type: USB, Headphone connectivity: 3.5 mm. Housing material: Plastic. Packaging width: 190 mm, Packaging height: 165 mm, Package weight: 0.305 kg