Feature: 1. Good Heat Dissipation: Our inverter has a cooling fan and the aluminum housing has a multi vent design to prevent the device from overheating. 2. Red Copper Inverter: Higher converted power, more durable and stable than ordinary converters, more powerful output and more stable performance. 3. Silent Operation: The inverter adopts stepless variable speed and temperature control setting, which is truly silent and allows you to work comfortably in a quiet environment. 4. Powerful Power: This inverter has a smart USB port for charging USB powered devices such as laptops, tablets and other small devices or any other home appliances. 5. Safe to Use: Advanced isolated input and output technology design, improved safety, with overload, low voltage, high voltage, overheating, short circuit protection functions, use more at ease. Specification: Item Type: Pure Sine Wave Inverter Material: Aluminum alloy, red copper Output Power: 2000W Peak Power: 4000W Output Waveform: Pure Sine Wave Output Voltage (AC): 220V USB: DC5V 2.1A Output Frequency: 50Hz or 60Hz Ambient Temperature: -10℃-50℃ Storage Temperature: -30℃-70℃ Relative Humidity: 0-80% (non condensing) Altitude: