I used to smoke a tobacco pipe but about 2 years ago I changed to electronic smoking with poor results. Although most devices work well they soon failed due a blocked atomiser. Then I found Vype epen that change the atomiser with each liquid refill and never failed to work. Since I purchased my unit, Vype have improved the unit increasing the battery capacity to prolong the time between charges. Vype has a good web site which is easy to use and their delivery service is second to none.