Creative Labs Creative T12 Wireless. System type: 2.0 system, Recommended usage: universal, Speaker placement: Portable. RMS rated power: 18 W, Frequency range: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 80 dB. Connectivity technology: Wireless. Weight: 1.16 kg. Compatible operating systems: Windows XP/Vista/7