The kit came with two batteries (white part of the cigarette), five mouthpieces containing the cartridge for nicotine solution (brown part of the cigarette), two atomizers (which also fit inside the brown part), a velvet carrying bag, and a couple of Zip-Loc bags (in which to carry the mouthpieces inside the velvet bag).
One of the two batteries sitting in the charger. It can also be charged in the USB port of a computer.
The mouthpieces have rubber stoppers to keep the solution from leaking out of the cartridges inside (or drying out over time).
You push the cartridges out of the mouthpieces with a pin inserted into the hole at the end of the mouthpiece, and then fill them up with the nicotine solution. The cartridges contain an absorbent wick made of "poly-batting filling."
Cartridges have been dropped back inside the mouthpieces and plugged with the plug.
If you don't want to go through this routine every day, you can also just drop 2-3 drops of the solution onto the cartridge (without removing it from the mouthpiece) each time you want to use the cigarette. One bottle of the nicotine solution is equal to 300 cigarettes (a carton and a half) and costs at most $25. (A carton and a half of cigarettes will cost you a lot more, even when you figure in shipping charges for the solution -- $9/order.) To avoid shipping charges and maybe get a better deal, I'll still search for a nearby store that sells the solution.