Features: 1.Short circuit protection & reverse polarity protection & waterproof protection. 2.High power & low energy consumption & excellent results, the use of conversation frequency electronic technology. 3.Full current limiting protection, intelligent pulse, high frequency / low frequency regulation, can be adjusted according to the need to adjust the frequency of the electric field size. 4.Use advanced numerical controller technology and exclusive designed computer program. Unique binarys output structure. duty cycle and frequency can be adjusted, so that they do not affect each other. 5.100% Satisfaction: Any further question about it, please feel free to contact us. Notice:Actual color may be slightly different from the image due to different monitor and light effectPlease allow 1-3cm deviation due to manual measurement Description: 1.Function: dual USB + LCD color smart display + universal socket + multiple protection functions 2.Product size: 20X11.2X5.6CM 3.Packaging and accessories: 1 packing box + 1 inverter + 2 pearl cotton + 1 pair of red and black battery clips + 1 cigarettes lighters + English manual 4.Maximum starting power: 1000W 5.Continuous power: 500W 6.LCD display: input/output voltage, power, load, frequency, protection function, working status light 7.Input voltage: 12VDC 8.Output voltage: 220VAC / 110VAC 9.Double USB interface: 5VDC / 2.1A 10.No-load current: ≤0.5A 11.Conversion efficiency: greater than 90% 12.Protection function: overload, over temperature, high voltage, low voltage, reverse connection, short circuit 13.Intelligent temperature control, can be used for electrical appliances less than 300W (except for inductive load electrical appliances and motor products) Include: 1 x Ultrasonic Inverter