Product Name: Car FM Transmitter Bluetooth MP3 Music Player Modulator Handsfree Quick USB Car Charger Model NO.: ASHHZNBT10 Input Voltage: 5V Color: Black Interface: USB Usage: Car Certification: FCC, CE, RoHS Usb Number: 2 Trademark: OEM Transport Package: Retail Package Origin: China Product Description Description:1: suitable for all kinds of models2: digital tube display3: the maximum output of dual USB charging port is 5V / 2.1a4: support the charging of Apple mobile phones and tablet computers5: support stereo FM transmission technology6: support music playback of U disk / memory card (max 128GB)7: support mp3, wma music format files8: automatic power-off memory function9: power on of direct vehicle cigarette lighter10: Bluetooth v4.011: Bluetooth Handsfree call12: support Bluetooth stereo music DSP Technology13: battery voltage detectionSpecifications:Vehicle charging of extended cigarette lighter: 12-24V / 2.5ARated working voltage: 12v-24vLimit working voltage: 8-27vUSB output: 5V / 2.1aWorking temperature: 0-60 degreesVoltage detection accuracySignal to noise ratio: > 60dBDistortion: < 0.1%Frequency response: 20hz-15khzSeparation degree of left and right channels: > 60dBBluetooth version: Version 4.0Bluetooth voice processing: A2DP (advance audio distribution profile) functionBluetooth transmission distance: less than 10mEffective distance of Bluetooth microphone: 0.5-2mFM transmission frequency: 87.5-108.0mhz