The spray system is automatic (enabled by suction) .This model works with a tank sprayer. Therefore, although the steam is abundant and that I used the e-liquid to 16mg of nicotine, the hit is rather light. The thread of the atomizer type 510 (possibility of adapting a clearomizer for a sensitive hit). The quality of the plastic "furnace" is a little cheap (risk of breakage if dropped). The mouthpieces of my model hold well for now. The batteries supplied 18350 have a capacity of 900 mAh. The manual is delivered in English, but you can easily find on the net simplified textbooks in French [...].
Goodies: a second battery that can not be caught off guard when the first is exhausted. A second atomizer with ferrule to vary the flavors during the day. The thread of the standard 510 atomizer.
Cons: the plastic of the "furnace" that is lightweight and could easily break if dropped. Mouthpieces deserved to be screwed for added security.