Terrible customer service! Not a great product. I have had the IQC for 8 days now. Immediately after opening the package I charged it and started using it. The device only holds a charge for 2 1/2 sessions...that's only 24 minutes of use!!! Then it shuts off and flashes low battery!!!! I immediately wrote them a email, waited two days with no response and wrote another email....STILL NO RESPONSE! The return policy doesn't matter if they NEVER contact you back! I will never purchase a vape from this company again... I wrote them 2 emails asking for a replacement battery to see if that was the problem and NO RESPONSE! DO NOT PURCHASE FROM THESE THIEVES! I'm out $140 dollars and my vapes is in the trash can!