1、【High quality music enjoyment】 This speaker has a dual stereo 3D system (2x3W) that reproduces clear, pleasant sounds. 2、【Easy to use】 Supports the connection of computers, laptops, USB power adapter, cell phones with USB socket, car USB charger, mobile power (power bank), USB socket power plug with a standard USB socket (5V, 1A, 5W) power supply. 3、【Button adjustment】 The USB speaker with separate switch and volume control, which allows you to easily control the speaker separately. Using stereo + inverted sound expansion technology greatly reduces the distortion of the sound, providing you with a 3 4、【Box honeycomb design】 The front of the speaker has a full cover of steel grids which the sound can pass lossless and provides good protection of the internal parts. 5、【Universal compatibility】 Thanks to the dual 5mm audio jack, this speaker can be equipped with microphone, headset, PC, computer, notebook, tablet, smartphone, MP3, MP4, Walkman, CD player, radio and TV / TV with 5mm Audio adapters are connected. 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: < 0.1% (1K / 1W 3.7) Signal-to-noise ratio:> 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