The Havit SK704 2:0 USB Speaker comes with a 50mm driver. It features an output power of 3W x 2(RMS). It has a sensitivity of 75dB and an Impedance of 4Ω. It has a frequency response 90Hz – 18kHz. It requires a power input of 5v DC. The Havit SK704 speaker has a 1-year warranty.