I have really enjoyed using the Atmos nano. Holds a long charge and charged relatively quickly. Easy to change preset voltage levels. I am currently using the third cartridge on the battery I continue to be pleased with this device!
One didn't work. I contacted manufacturer and they send me another one that worked.
I ordered the pen and when i received it it wasnt working. It would not take a charge. The customer service was amazing they right away sent me a new one and sent me a return shipping label. great customer service and product