Practical part of the work.

Fast and well packaged delivery.
It works, but is not quite as smoothly as expected (if someone specially arrives), since the slide switch quite "knatschend" acts.
You have to really up the spiral GERAN with the cigarette in order to get safe and fast, but it works far more. Regular contact makes the spiral but not beautiful (but this does not really stand out, because the switch this obscured yes) and whether the durability of the spiral will suffer remains to be seen.
With one battery charge a week and longer I can cope definitely not confirm unless you smoke only 3-4 cigarettes a day. In about 10-15 missions per day you have to upload the latest after about 3 days.

Conclusion: For even stuffed not so highly recommended, as they are and never so perfectly "smooth" at the front end that inevitably more tobacco comes to the spiral. But who wants to ignite gas and gasoline absolutely free and without matches, can buy the thing without hesitation.