[ SPECIFICATION ] Input: DC12V/24V; Output: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V, USB: 5V 2.4A, 34W Max. 6 feet long power cord. 10 selected plugs are popular used in small electronics. 34W Car Lighter Adapter is compatible with Spectra S1, S2, S9-Plus double electric hospital grade breast pump, Zyllion shiatsu neck & back massager cushion seat chair pad ( ZMA-14, ZMA-14-BK, ZMA14 ), Snailax shiatsu massage car cushion seat chair pad ( SL-256, SL256, AL233, AL-233 ).