* BT 4.2 version, connect your BT-enabled devices to this speaker set, enjoy more convenient connection.* Support 3.5mm AUX interface connection, perfect for desktop, laptop, DVD, TV, smartphone, tablet and other device with 3.5mm interface.* Steady and undistorted bass sound effect with surrounding sound, which brings you wonderful music.* USB-powered, energy-saving and environmentally-friendly, safe and reliable.* Three high-performance speakers set. Exquisite design. Lightweight and portable, convenient to carry.