Ewent EW3515, 1.0 channels, 3 W, 100 - 20000 Hz, 70 dB, Wired, Mono portable speaker Ewent EW3515. Audio output channels: 1.0 channels. RMS rated power: 3 W, Frequency range: 100 - 20000 Hz, Signal-to-Noise Ratio (SNR): 70 dB. Connectivity technology: Wired. Product type: Mono portable speaker, Product color: Black. Recommended usage: Universal, Compatible products: Apple iPod, iPhone, iPad