Specifications: Power: 120W (Peak 300W) Input Voltage: DC 18V - DC 21V Output Voltage: 220V (no suitable for 110V electrical appliances) Static Current: About 0.05A USB: Orange power 27W (5V/3A 9V/3A 12V/2A), White power 15W (5V/3A) Volatage Display: 5V - 30V Protection: Overheat protection, Overload protection Warnings: To avoid damaging the appliance, you must confirm that the AC output voltage and frequency of this unit is matched with those of the electrical appliance first before using the AC output. The usage time depends on the capacity of the battery and the power of the device. The power of AC electronic appliances you used must be lower than the maximum power (120W) of this unit. lf exceed the maximum power(120W) or voltage, your appliance will automatically stop working because of over -voltage protection. Notes: This product does not contain batteries and electrical equipment. The batteries and electrical equipment in the pictures are only used to demonstrate product performance! Due to the difference between different monitors, the picture may not reflect the actual color of the item. Manual measurement, please allow 1-10mm error. Thanks for your understanding.