Harman/Kardon ONYX 7 GREY. Audio output channels: 2.0 channels, Speaker type: 2-way, Tweeter diameter: 2.5 cm. RMS rated power: 50 W, Frequency range: 50 - 20000 Hz, Signal-to-Noise Ratio (SNR): 80 dB. Connectivity technology: Wireless. Product type: Stereo portable speaker, Product colour: Grey, Product design: Spheric. Recommended usage: Universal