High quality compact stereo speakers for notebooks and desktops with state-of-the-art design. Clean and natural sound. Elegant design fits perfectly with LCD monitors and other accessories. It works with all computers, tablets with USB output - power and 3.5 mm output. Volume control on the rear of the speaker. High quality stereo speakers for laptops and PCs. They guarantee pure and natural sound. Elegant design fits perfectly with LCD monitors and other accessories. They work with all computers with speaker output and USB output. The AC870 S distinguishes the best speaker sound quality compared to competing bids. Modern membranes provide a clean, pleasant sound. Volume control located in a convenient, easily accessible place. High Quality Set type: Broadband. Excellent mini size speaker set, that allows you to enjoy movies, music and games both at home or during travel. 4.5cm universal and quality membrane - assures clear sound with no distortion at any sound level - you will be surprised what this little set can manage! Discretely hidden volume control on the backside of the speakers Requires USB port + mini jack port. No additional power supply needed, or mains socket! Light but durable and stable design.