Charging is enough for a 40m apartment, if you do not clean it every 3 months, Different pros: It's like the difference between a home phone and a smartphone. If it is important for you to never charge anything from the outlet, then yes - it will not work. Too bad I didn't buy it sooner. Some cons: There is an important disadvantage - the container is not cleared just like that "pressed the button and got enough sleep." To clean the container, you must either climb in with your finger to pull out the wool, or with a Chinese stick (because everyone has unpacked houses lying around)