Solar power bank is compatible with all USB devices such as smartphones and tablets. The product has 2 USB output ports.When the solar panel is being cared for, it will generate current to charge the battery, and the indicator light will flash.Solar charging is affected by the instability of sunshine intensity and duration. The battery capacity of the product is very large, so the charging will be very slow and should be used as an emergency function. For daily charging, please use a charger with a power above 5V2A to charge the device.It comes with flash light with 3 modes.Your logo is welcome.