2.1 Channel Bluetooth Multimedia Computer Speakers Support Magnetically Shielded High-quality With Subwoofer Power Output: RMS 2W x 2 + 4.5W x 1 Input type: AUX/Bluetooth Frequency response: Satellites: 120Hz - 20kHz & Subwoofer: 20Hz - 150kHz Signal to Noise Ratio: Above 80dB Subwoofer unit: 106mm, Magnetically shielded, 4 Ohm Midrange unit: 50mm x 90mm, Magnetically shilded, 6Ohm