With Bluetooth hands-free function - This device is fixed on the steering wheel directly need not modify the car easy fixing a nd comfortable operation. - To answer the phone call and to play music stored in the mobile phone by this item with perfect sounds quality. - Support U disk SD MMC card. - Support MP3 WMA file . - Display the number of incoming phone call clearly by LCD screen in Bluetooth backlight. - High capacity battery can operate bluetooth call more than 10 hours.