Digital display, 12-24V voltage, >60db SNR, <0>60db distortion, version 2.1+EDR, A2DP Bluetooth sound processing, 10M Bluetooth transmission distance, 0.5-2M Bluetooth microphone effective range, 87.5-108Mhz frequency, stereo digital PLL locking, 1x Bluetooth FM transmitter car charger, 1x audio cable, 1x user manual.