1. The speaker is compatible with various devices such as tablets, laptops, desktop computers and mobile phones2. Direct USB supply, easy to connect. BLUE LED lights will bring you visual and auditory enjoyment.3. Bluetooth mode is compatible with plug-in mode, 360 degrees surround sound quality. Bluetooth version V5.0 is compatible with most devices with Bluetooth4. -diameter full-frequency vibration speaker, with heavy , midrange and clear treble. The rear woofer, with solid , brings you high-quality .5. High magnetic speakers, bring you a different listening experience.Interface type: USBApplicable object: computerInput voltage: 5VChannel: 2Gross weight: 500 gramsMaximum : 6wBluetooth version: V5.0: 3W x 2Speaker specification: 2 inch speaker 5W x 2PCSDistortion: THD+N (1%)Frequency: 80Hz- 18KHzSignal to noise ratio: 85dBConnection : Wiredcolour:BlackMaterial:plasticsize31 x 6 x 6cmPackage Contents:1 x SpeakersOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.