Charger Universal Power Adapter for Bus Camera,Smartphones,Car DVR,GPS Devices,Portable Speakers

Voltage]Input: DC12V,Output: DC12V/2A,Max 24W.
[Compatibility]This GM car charger comes with 8 popular connectors for trucks,cars,buses,or RVs,for home electronics such as smartphones,tablets,portable DVD players,CD players. ,GPS devices,cameras,speakers,car TVs,etc...
[Importance]DC Plug Polarity: inner Positive(+),outer Negative(-). Some musical device may require inner Negative and outer Positive (totally opposite),please check carefully before order.