Features 1、Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2、The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3、Professional chip set provides superior performance in the system. 4、Easy to operate, anti-aging, and extend service life. 5、Preamp output can directly promote the headset, also can be connected to the use of rear stage power amplifier. Specification Features: 1.Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2.The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3.Professional chip set provides superior performance in the system. 4.Easy to operate, anti-aging, and extend service life. 5.Preamp output can directly promote the headset, also can be connected to the use of rear stage power amplifier. Specifications: Material: ABS Color: As picture shown Size: Approx. 5x4x0.5cm/2x1.6x0.2in Audio input mode: Bluetooth receiver, USB decoding play, TF card decoding play. Supports play format: MP3, WMA, WAV, FLAC. Power supply: 5VDC (original mobile phone charger can supply small USB plug) Packing List: 1 x Module Package List