Nakamichi NKM-NQ617B Media Player with Bluetooth/USB/Aux/Rds Feel the power of the 4x50W audio system, with 4V pre-output and support for various audio formats like FLAC,M,WAY,APE,AAC & MP3. With user-friendly features like USB readability and charging, as well as radio, the Nakamichi NQ617B is the perfect fusion of cutting-edge technology and sleek design. Features Supports Bluetooth (Hands-Free Calling and Wireless Audio Streaming) USB Compatible Single Din Design Supports MP3/WMA Working power supply voltage 12V(9.6 TO 15V allowed) Maximum power output 50Wx 4(4Ω) Acoustic impedance 4Ω Unit Dimensions(WxHxD) 182x108x53mm Fuse 15A RADIO FM Radio station tuning memory 18 FM FM reception frequency range 87.5-108.0 MHz Antenna impedance 75Ω USB Supported Media USB Supported Formats FLAC(16bit)M,WAY、APE、AAC、MP3 File System FAT 16.FAT32 USB/SD card USB2.0