Features 1、Combination speaker - 1 main speaker & 2 side speakers. 2、Superior Sound Quality: Enjoy your music through dual high-performance loudspeaker. Ensures enhanced clarity and fidelity. 3、Rear 3 inch bass speaker lets out a superior bass sound. And the air guide in the front makes the bass sound steady and undistorted. 4、Treble and bass independent adjustment, rotate the knob and adjust, shows perfect interpretation of all kinds of music. 5、Lightweight and portable, convenient to carry. Suitable for cellphone, tablet, laptop, PC, desktop computer and other audio devices. Specification Description: This is a professional speaker with superior sound quaility, composed of 1 main speaker and 2 side speakers. This speaker will let out a steady and undistorted bass sound. And you can adjust the volume, bass and treble by rotating the knobs, this speaker will create different atmosphere when playing different kinds of music. It may be a perfect companion for your cellphone, tablet, laptop, or desktop PC! Features: 1. Combination speaker - 1 main speaker & 2 side speakers. 2. Superior Sound Quality: Enjoy your music through high-performance loudspeaker. Ensures enhanced clarity and fidelity. 3. Rear 3 inch bass speaker lets out a superior bass sound. And the air guide in the front makes the bass sound steady and undistorted. 4. Treble and bass independent adjustment, shows perfect interpretation of all kinds of music. 5. Lightweight and portable, convenient to carry. Suitable for cellphone, tablet, laptop, PC, desktop computer and other audio devices. Specifications: Model: D-202 Material: ABS Connection: USB 2.1 Wired Audio Cable Length: 1m Audio Port: AUX 3.5mm USB Cable Length: 1m Power Supply: DV 5V & USB 5V Adjusting Knob: Volume, Treble, Bass Output Power: 3W Size: Approx. 95 * 115 * 128 mm (Main Speaker), 62 * 63 * 75 mm (Side Speakers) Suitable for: Cellphone, tablet, laptop, PC, desktop computer and More Package Weight: About 550g Package List: 1 * Main Speaker 2 * Side Speakers 1 * Manual (Other items in the pictures are not included.) Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.