Solar Charger Power Bank: The solar panel can collect solar energy all day under direct sunlight. Please kindly note that solar charging is an additional feature and please take the solar charging option as a backup solution while other power sources are not available. The solar charging function may be not efficient enough in cloudy days, rainy days and under weak sun day. Please make sure the solar charger power bank is fully charged before your trips. 50000mAh Big Capacity: The 50000mAh power bank provides 17.4 charges for iPhone 12, 12.2 charges for Samsung S21.Please charge it for 24 hours after you receive it. 4 Output and 2 Input Ports: The solar powered charger is equipped with 4 output ports and 2 input ports, including 1 type C input port and 1 micro input port. The solar chargers for electronic devices can support charging 4 devices simultaneously. Compatible with most of smartphones, tablets, earphones, cameras and other devices. Bright Mode/ Low Light Mode/ Strobe Flashlight: The solar powered phone chargers is equipped with LED flashlight. 3 light modes. Double press the button to turn the bright mode on. Press the button once to switch to low light mode and then press once to strode mode. Double press the button to turn off the light on any modes. A must have for camping, hiking, long trips and home emergencies. Note: 1.Please charge it via outlet at least 20+ hours at first time.2. Please don’t charge it all day nor over voltage. 3. The best operating temperature for a solar charger is -14°F—140°F, for security reasons, please don't put it in a parked car or other high-temperature environments. 4. It is Not allow to be carry on airplane. 5.Please do not take solar as a primary charge source. Solar charging is for emergency use. In daily life, we highly recommend charge it via wall outlet.