Mini Speaker with 3.5mm Jack and USB Powered for (PC // Laptop // Smartphone) [D-16A] Output: 6W Frequency: 90Hz~20KHz Power: USB / DC 5V=600mA Impedence: 4Ω Color: Orange Channel: 2.0 Separation: >=40dB Sensitivity: >=80dB ± 2db SNR: >=80dB ± 2db Material: Plastic MP3 Format: MP3 / WAV Feature: – Compact design, easy to place, optimal configuration for laptops. – 3.5mm 2-channel audio input interface for linking computer / MP4 audio to speakers for playback. – 2.0 dual channel, 3W 4Ω full range speaker, the sound is more round and bright. – Rear switch to adjust the volume, convenient and fast. – The first rear bass vent for a perfect bass. – Direct power supply via USB, convenient and practical to improve product reliability. – Ultra-thick bubble pad for safe transportation.