Description 1. Multi-device is compatible with 220V AC output, high-power 300W output, and it is as convenient to use multiple devices when going out as 2. 9 heavy safety protection does not hurt the car battery, effectively guarantees the stability and safety of electronic products3. 300W high-power four-port simultaneous charging Dual AC+USB+Type-c four-port input can charge four devices at the same time, stable output without power failure4. The 300W high-power complete system is equipped with a standard 300W power supply, which can supply power to multiple devices at the same time, with stable output, safe and reliable5. Intelligent temperature-controlled silent fan The intelligent fan will rotate at different speeds according to the load and power used. At the same time, the fan will start to work when the temperature reaches 45-50C. With double ball shaft friction rotation, the fan rotates quietly. The product dissipates heat quickly and realizes intelligent energy saving.Product Description: Name : Sprk 300 InverterDC input: DC12VAC output: AC220V10%Output frequency: 53HZMaximum power: 300WHigh efficiency: 90%USB output: 2x3.4A USB 3xPD 20W USB2xQuick Charge QC3.0(5V/3.1A, 9V/2.1A, 12V/1.5A)size: 20cm x 8.5cm x 4.5cmMaterial: ABScolour: greenPackage Contents: 1 x 300w inverterOnly the above package content, other products are not included.Note: Light reflection 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.