Description: 1. Support Bluetooth hands-free calling, built-in microphone, convenient and secure answering phone: 2. Noise handling during call CVC, wind noise suppression, full duplex call technology 3. Support mobile phone A2DP function, directly play high quality mobile music after connecting to Bluetooth 4. After power-on, it will automatically connect back and automatically enter the pairing state. 5. Support TF card expansion to play MP3/WAV format music 6. Comes with car charger, output 5V-1000m, can charge handheld terminal device 7. Support TF card (32GB, 16GB, high speed 6 or more) Bluetooth: Bluetooth version: V3.0+EDR Frequency: 20h-20khz Sensitivity: 42 decibels + 3db360 Voltage: 5V+-0.5 Operating current: 45mA Standby current: 25mA Frequency: 2.402-2.480ghz Effective distance: 5 meters Sensitivity: -92dbm RF output: 4dbm FM FM: 87.5MHZ-108.OMHZ Transmit power: 87dbuv/107dbuv Effective distance: 2 meters Specification: Material ABS Power mode, cigarette lighter type car MP3 Screen size, 1.2 inches Power supply voltage, 12-24 (V) Rated working voltage --------12~24V Consumption rate ------------0.5W Working temperature --------- -10~70 degrees Working temperature --------- 0~90% Frequency response ------------20Hz～15Khz Audio format ---------MP3 Support Bluetooth protocol---HFP/HSP, OPP, A2DP/AVRCP, PBAP Signal to noise ratio ---------68dB Bluetooth version ------------v3.0+EDR Bluetooth sound processing - A2DP (Advance Audio Distribution Profile) Bluetooth transmission distance --------10~15m FM transmission frequency ---------87.5~108.0Mhz USB fast charge output ---5V/2.1A Size Chart: Size: 8 * 4 * 8 cm Package Includes: Car transmitter x1 manual x1 Note: THANK YOU FOR SHOPPING WITH US! Have a nice day！☺