Features -Pure Sine Wave Output -Input & Output Fully Design -High Efficiency Design -Led Display Showing Input, Output, Load And Failure Status -Built- In Soft Starter, Reducing Inrush Current -Advanced Microprocessor Control Design -Input Polarity Protection/Uvp/Ovp/Osp/Olp/Otp What's in the box 1 x sky king 300w pure sine wave inverter 1 x Solar Panel, Cable Attached 1 x Sky King 300w Pure Sine Wave Inverter