Jackery Explorer 550 is the model specially supplied by Jackery for non-AMAZON (temporarily not selling on Jackery site). And it is the official product of Jackery. You can buy this item from offline sales channels like The Home Depot, Lowe’s, Harbor Freight Tools, etc. (Go to “where to buy”, you will find Jackery offline sales channels except amazon.) 500-WATT OUTPUT WITH 550WH CAPACITY: The Explorer 550 has a perfect capacity for Laptop, TV, Drone, CPAP, Rice Cooker, etc. No need to worry about any devices out of power. BETTER THAN CAR INVERTER: If you want to use electricity in the car, the engine has to run all the time to offer power for a device like Car Fridge. This power station can protect your car's battery by providing energy. RV/CAMPING/FISHING/OFF-ROAD/HUNTING/GETAWAY/EMERGENCY: With its eco-friendly and quiet features, Explorer 550 is one of the best investments for your outdoor life. No extra setup time required for Explorer 550 compared with the traditional RV system. BUILT-IN MPPT CONTROLLER: The MPPT module is designed inside the power station. By constantly monitoring the voltage and current output of your solar panels, MPPT adds up to 23% more solar recharging efficiency.