4 in 1 dual usb car charger adapter 3.1a bullet for mobile phone ipad<br /><br />specification:<br /><br />input voltage:dc 12 v-24v<br />output voltage: dc 5v<br />output current: 3.1a<br />conversion efficiency:95%<br />voltage measuring range: 5 v - 25 v<br />current measuring range: 0-3.1 a<br />temperature measurement range: - 20 degrees to + 80 degrees<br />size:78 x 40 x 30mm<br />color: black<br />type: 4 in 1 car charger<br />output interface: usb<br /><br />features:<br /><br />-100%  and high quality.<br />-double 3.1a usb output｣ｬpttc over-current protection｣ｬdisplay the voltage｣ｬtemperature and current alternately by each 10 seconds.<br />-auto power off while the input current or output current is greater than the safety current｣ｬplease plug out will working again.<br /><br />fitment:<br /><br />compatible brand: universal<br />compatible model: universal<br /><br />package included:<br />1 x car charger