Stereo speakers, take you to the scene, provide powerful low-I output, powerful and full of volume. USB power supply mode, 3.5mm audio interface, compatible with most electronic devices on the market. Built-in bluetooth design, stable transmission without lag. The volume of the dual-sound unit is stronger and can provide double the volume to bring you better audio, video and game effects. The appearance is simple and generous, the volume is small, and the volume is large. Type: computer speaker Connection method: Bluetooth connection + audio Interface type: USB+3.5 Frequency response range: 100HZ-20KHZ Output power: 4 ohms 3W Signal-to-noise ratio: ≥75dB Power supply mode: USB + built-in battery Channel: 2.0 Material: ABS Colour: Black Package Contents: 1 x Speaker 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.