Bluetooth handsfree
74231T
BT Hands Free + FM Transmitter+ 3.1A Car Charger(Dual USB port )
Bluetooth V3.0 + EDR
1. Build in MIC , Hands free talking and A2DP music playing
2.Switch to Hands-free mode automatically from music playing
3.Dual USB outputs 5V/3.4A
4. LED frequency display
5.With voice prompts
6.Supports TF card / USB flash memory
7.Suppots MP3/WMA format files
8.Frequency ：87.6－107.9MHZ
9. Car battery voltage display : to examine your car battery condition
