High-quality full-range speaker are used 3W output power Sound quality is pure and pleasant Adopts Class D digital power amplifier, which has the characteristics of low noise and good sound quality Low power consumption and large volume Features 1. High-quality full-range speaker are used 2. 3W output power 3. Sound quality is pure and pleasant 4. Product design is light and delicate 5. Small size and does not take up too much space 6. Adopts Class D digital power amplifier, which has the characteristics of low noise and good sound quality 7. Powered via a computer USB port 8. Low power consumption and large volume *When it is connected to computer through USB, it can automatically install the driver, and computer identify it as a USB speaker (USB audio2.0), then you can use it as a computer speaker. Specifications 1. Operating voltage: 5V DC 2. Rated output power: 3W 3. Rated Resistance: 4Ω 4. Frequency response: 40Hz-18KHz 5. SNR: 95dB 6. Distortion: 0.5%-1.0% 7. Operating temperature:-20℃ to +70℃ 8. Storage temperature:-30℃ to +80℃ Color: Black Material: plastic Package Contents: 1*USB Mini Speaker Subwoofer Only the above package content, other products are not included. Note: Light reflection 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.