Features: Brand new and high quality Supports common speaker or earphone, microphone hole Microphone recording and karaoke function, with LED indicator light showing working status Advanced digital technology. Multi-channel technology enables 5.1 channel dynamic sound Dynamically rotating sound field. Freely switch between speaker and headphone mode Adjustable analog speaker position simulation Converts analog signal (microphone, CD, music, TV, broadcast, etc.) into digital signal with save function True universal plug and play. Connects via USB port and works directly Specifications: Chip: HFR8103 Interface: USB Material: ABS Size: approx 5.1 x 2.2 x 1.2 cm / 2.0 x 0.87 x 0.47 in Provides USB 2.0 pure digital sound output, supports virtual 5.1-channel audio Compatible with Windows 2000/2003/XP/Vista/Win7, Linux, WinCE (5.0, 6.0), Android (2.1, 2.2, 2.3, 4.0), Mac Features 23 acoustic field modes and 16 rhythm modes Note: Due to lighting effects and shooting angles, slight color variations may occur Please allow 0-2 mm error due to manual measurement Package includes: 1 x Mini USB to 3.5mm Audio Adapter