1: Output waveform: pure sine wave 2: Efficiency: 89%. 3: Protection: short circuit, overload, overcurrent, overvoltage and other protections 4: Overheating protection: when the temperature of the temperature control point reaches 50, the machine stops working and is in the protection state, and the protection light is on. 5: Power supply program: IC program 100% full power, with protection function Input Voltage:DC12V Output power:350W Output Voltage:220V AC(USB 5V DC) Operating Temperature:0 - +50 Storage Temperature:-20 - +85 Humidity:10%-95%RH Tip:Depending on the batch, the appearance and color of the label may be different, and the designation is not accepted and does not affect the use. Colour:Silver Material:Metal Size:123x89x49mm Package Contents: 1 x inverter 2 x battery clip Only 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.