Important notice Check the voltages of your battery: 12 volts (note that it is only for 12 volts and not 24 V) -compatible with electronic equipment, laptops Etc Turn off or remove the switch before leaving the car to conserve battery power. Note that the cooling fan emits a little noise when using the unit. Use your 220 V devices only in a 12 V source. The technical specifications Product: car power inverter 200 W Used: use in the car. Laptop, Tablet pc DVD player, digital camera, etc. Input voltage range: 12 V DC Output voltage: ca 220V ± 10% Output frequency: 50 HZ (47-55 HZ) Input current: 8.3A Output current: 0.45A Output waveform: modified sine wave Protection against heat: 65 ℃ Low battery cut: 10 v High Battery Cut: 15 v Discharge current: less than 0.4A Conversion efficiency:Greater than 85% Continuous AC output power: 200 W Maximum power: 400 W USB: one colour: red Material:Die-cast aluminum size: 8.7x6.4x3.8cm Package Contents: 1 x car inverter 1 x car charging source line 1 x conversion plug Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.