YJ Ji brand YJ-7790 solar charger is made of a body made of ABS plastic and heat-resistant polycarbonate, which provides the necessary strength against impact, pressure and heat in mixed colors. This device has succeeded in receiving IPX65 water and dust certification to be able to use it in different environments and unfavorable and rainy weather conditions. The YJ-7790 is powered by a 3000 mAh lithium battery and is charged via a USB port with built-in charging for mobile phones, speakers and other gadgets based on a maximum current of 0.58 amps at 6 Volt and with proper safety. To charge this battery, there are two practical methods with easy access to all places, which include power supply through a solar panel and a micro USB port. The YJ-7790 is also equipped with two LED COB lights with a 3-meter wired key that are connected to the device and supplied with power through two needle inputs provided on its body. This panel with a total power of 3.5 watts is able to provide the desired amount of brightness in wide dimensions by lights and illuminate dark environments with moonlight. This device has the ability to charge all kinds of phones, speakers, etc., it should be mentioned that there are 4 charger heads inside the cable box.