Product Name: FM Transmitter Bluetooth Handsfree Car Kit TF MP3 Player Dual USB Charger Model NO.: ASHHZNG32 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 Features:1. Equipped with battery voltage detection function;2. Support Bluetooth hands-free calling, built-in microphone, secure answering calls;3. Support mobile phone A2DP function, directly play high-quality mobile music after connecting to Bluetooth;4. Automatically connect back after power-on and automatically enter pairing state;5. Support TF cards / U disks to play MP3 / WMA / WAV format music;6. Comes with USB car charger, output 5V/3.1A, can charge mobile devices.Specifications:Bluetooth version: 5.0Working voltage: 12-24VLimit voltage: 9-26VSensitivity: -42 dB +/3db 360Working current: 45mA (maximum)Standby current: 25mA (maximum)Frequency: 2.402-2.480GHzBluetooth effective distance: 8 metersSensitivity: -92 dBmRF output: 4 dBmFM frequency: 87.5-108.0MHzTransmit power: 87 dBuv/107dBuvFM distance : 2 metersGross weight: 57g