Features:  1. Intelligent. Switch between two audio connection modes, toggle Switches, voice prompt connection mode.  2. Wireless.Built-in wireless Bluetooth chip, Bluetooth 4.2 version connect wirelessly to your phone, accessible within 10 meters.  3. Widely compatible. 3.5mm universal audio jack, can be used as computer audio, and compatible with most smart devices on the market.  4. High sound quality. Noise reduction, anti-interference, make the sound quality clearer, can filter noise such as electric current, true sound quality.  5. Non-slip base. Rubber non-slip mat, anti-slip and shockproof.    Specifications:  Color: Black;  Material: plastic;  Net Weight: 930g;  Connection: Wired;  Soundtrack: 2.0;  Size: 460 x 77 x 70mm;  Speaker power: 3W x 2;  S/N Ratio: ≥60dB;  Power Supply Interface: USB 5V;  Impedance: 4Ω;  Bluetooth: 4.2;  Frequency Response: 60Hz-20KHz;  Degree of separation: ≥30dB Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.