Specifications: Product:150W car power inverter Used:in-car use. Tablet pc DVD player, digital camera, etc. Input voltage range: DC 12V/24V Output voltage: DC 12V TO DC110V10%/DC24V TO DC220V10% Output frequency: 50HZ/60HZ Input Current: 8.3A Output Current:3.1A Output waveform: Modified sine wave Over heat protection: 65 Low Battery cut off : 10v High Battery cut off:15v Unload current: Less than 0.4A Conversion efficiency:>87% Continues AC Output Power: 75W Peak Power: 150W USB Port:3 Impotant Notice: Check the voltages of your battery: 12 volts/24V - compatible with electronic equipment, ... etc. Switch off or remove the switch before leaving the car to conserve battery power. Please note that the cooling fan emits a little noise when operating the unit. Use your 220V devices on a 12V or 24V. 1. There is no limited stock to fulfill the orders on a daily basis. 2. For USA/CA /RU the shipping is quickly. 3. Priority delivery,fast delivery in 48 hours. 4. No invoice or receip or promotional materials included.