Operation confirmed. Although there is no outer box, everything inside is included (main unit, AC adapter, dedicated gel, instruction manual). The main unit has been used a few times, and the included gel has been used only once, so it is estimated to be 90% full. I haven't been able to make it a habit, and I don't think I'll use it if I keep it, so I'm putting it up for sale. The parts that touched the skin have been disinfected with alcohol. I plan to ship it in a Yu-Packet Plus dedicated box.