Car MP3 Player Wireless FM Transmitter Smart Phone Holder Charger With Bluetooth Function.     Description:  1. BT funtions include: Handsfree, BT MP3 player, BT phone external speaker.  2. BT car handsfree: Pair with phone, then handsfree available, built-in speaker and Mic, clear sound.  3. Multi compatiable: Sync paired with 2 sets phone, compatiable with 99.9% with BT phone.  4. Perfectly solving not stable for nomal car holder, unique design,popular in many countries.  5. Availble for phone, camera, GPS,recorder and different electronic appliances charge with built-in Li Battery and also plus car charger.  6. This is also adapt for phone holder and handsfree.With external speaker and built-in battery make it better,the cable ties keep the line tidy. Popular in many drivers.  7. Broadcom BT3.0 EDR. 8. Support incoming calls.  9. Support HSP,HFP,A2DP. 10. Pair with 2 phone.     Specification:  Speaker power: 8ohm/2W.  Power supply: DC5V 1A.  Support phone size: 58-90mm.  Operating temp: -10~60 degree.  Store temp: -20~70 degree.  Material: ABS.  Bluetooth version: 3.0 EDR.  Battery: 200MA.  Support mobile phones of width: 58-90mm.     Package Included:  1xHandfree Car Holder