1. The speaker is compatible with various devices such as tablets, laptops, desktop computers and mobile phones 2. Direct USB power 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 Bluetooth 4. Large-diameter full-frequency vibration speaker, with heavy bass, rich midrange and clear treble. The rear woofer, with solid bass, brings you high-quality bass. 5. High magnetic speakers, bring you a different listening experience. Interface type: USB Applicable object: computer Input voltage: 5V Channel: 2 Gross weight: 500 grams Maximum power: 6w Bluetooth version: V5.0 Power: 3W x 2 Speaker specification: 2 inch speaker 5W x 2PCS Distortion: THD+N (1%) Frequency: 80Hz- 18KHz Signal to noise ratio: 85dB Connection method: Wired colour:Black Material:plastic size：31 x 6 x 6cm Package Contents: 1 x Speakers Only the above package content, other products are not included. Note: Light shooting 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.