General features: car stereo receiver with LCD display, AM/FM tuner, detachable surface, USB 1.5A connection for quick device charging, powerful 50 watt Amp amplifier per channel, front AUX input, playback of MP3, WMA, WAV, ACC, and high-resolution FLAC files Bluetooth and smartphone features: Built in Bluetooth for audio streaming and hands-free calls (including microphone), controlling 2 phones at once, voice recognition dialing, wireless control of PANDORA and Spotify from your Android device Audio features: Play USB storage devices, 13 segment equalizer with digital time alignment, K2 technology improves digital sound for most music sources, sound shaping tools can fully utilize your digital music library - do not play CDs--- Input: Front USB, Front Auxiliary Input - Output: 2-channel preamplifier output (2.5V rear/bass) Feel free to contact us if you have any questions, and we will reply to you promptly