Why Choose Our Speaker? 1.High quality sound Built with two-inch full-range loudspeakers and full-frequency magnetron technology, EIVOTOR USB loudspeaker offers you a harmonious 3D enjoyment in multi-directional. 2.Button Adjustment The separate button volume control allows separate volume volume cancellation, making it easier and more convenient to use. Box honeycomb design Covering the steel grilles on the front not only protects the internal parts, but also reduces sound loss. 3.Universal Compatibility The speaker can be connected to devices such as PC, notebook, tablet, smartphone, MP3, MP4, CD player, TV, radio, IPTV and other devices with 3.5mm AUX port. 4.After-sales warranty service 30 days refund,6 months exchange service Friendly Tips: 1. Please use the speaker under an appropriate power supply (5V, 1A, 5W). Excessive current can damage the speaker. 2.For some TV, which have no AUX port, an adapter is needed. (not included in the package) And when connecting to the TV, the speaker can not be charged. specification Input voltage: DC 5V Power supply rated power: 10W Power supply: standard USB plug Audio Input / Headphone Output: Standard 3.5mm audio jack Microphone input: standard 3.5mm jack Sound System: 2.0 Stereo + Inverting System Horn resistance: 4 ohms Output power: 3W + 3W Frequency response: 80HZ-20KHZ Distortion: 75DB Resolution:> 45DB Increase sensitivity: 500MV Size: 18.11 * 2.36 * 2.55inch (L * W * H) Package includes: 1 x USB PC speaker 1 x user manual