Description:100% brand new and high quality.USB plug only with power supply function,3.5mm plug is -audio input function.1: Mini strip speaker, small body and large space: does not occupy the desktop space, small and simple.2: Desktop laptop partner.3: Internal magnetic double speaker, with DPS technology, the volume is louder, built-in independent bass vibrator, and it is a small power amplifier device.4: When playing: Can distinguish between left and right footsteps. Movie: Restore the original sound. When studying: Can help you hear the course.5: 1.35 meters of pure copper wire, there is a separate volume adjustment knob on the line, the upper and lower adjustment is more convenient.6: USB power jack, 3.5 MM -audio jack. Plug and play7: For desktop computers, notebook computers, smart TVs and projectors, and mobile phones with 3.5mm -audio jacks (USB power must be connected externally.)8.Holiday gift, home gift, a perfect gift for your family, lovers or friends. Shape chic and adorable size ideal for placing on table, especially for home, office and school. SPECIFICATION:Product Name: USB 2.0 Computer SpeakerOutput power: 3W x2Color: Black Line length: 1.35mVolume control: Volume adjustment knobSpeaker size:2 inchesMaterial: ABS+ aluminum alloyOutput voltage: 5VOutput mode: 3. 5mm-Audio input signal to noise ratio: 80dbProduct size: 31x6.3x6cmproduct weight: 506g Package Includes:1 x 3.5mm Speaker Powered by USB