1. The built-in control unit is designed to be very convenient, which can quickly increase/decrease the volume. 2. 2 3W speakers, 2.0 enhanced stereo channels, provide pure and beautiful sound quality. 3. With the help of colorful breathing lights, it will bring you visual and auditory enjoyment. 4. USB power supply, energy saving, environmental protection, safe and reliable. 5. Exquisite and portable design saves space in the workplace. Compatible with desktops, laptops, mobile phones, smartphones, tablets and other 3.5mm audio devices. Product name: Computer speakers Model: A1 Category: Smart portable speaker Speaker type: Active subwoofer Connection: 3.5mm audio jack Channel: 2.0 Number of speakers: 2 Speaker sensitivity: 85DB Frequency response: 40-18KZH Voltage: 5V Output power: 3W x 2 Cable length: 1.35m Color: Black Material: ABS Size: 6.3 x 6.5 x 9cm Package content: 1 pair x computer 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.