Power Source:Car Lighter Slot
Capacity:TF Card/U disk less than 32G
FM emission distance:3-5m
Suitable:Bluetooth-enabled mobile phone
1.Find an blank station and keep the FM transmitter and car FM radio at the same frequency, it may minimized the static noise.
2.The Volume, so it had better to volume up the devices ,not car speaker.
About Volume Down:
You should adjust volume when speaking phone,as this item comes with the default volume
About Playing Music:
Sometimes,there's a stuck when connecting phone and car charger and FM,you should exit and reconnect it,then adjust volume
About Switch Languuage:
Within 5 seconds after the power on,long press the function button for 5 seconds to switch between Chinese and English language