Supplier takes extremely ling to respond to messages. Infact while writing this review the machine is not working and im trying to contact them for over a week . i got machine in November and only the cool sculpting handles were working. the sent a new mother board and videos with how to install same. Note these videos were not helpful as they were on a different model different design. Now i replaced the board did 1 cool sculpting session and the handles are now heating up instead of feeling cold. I cant get any help from the suppliers. Biggest waste of money. If you have money to waste buy this machine. i reported my issue ro alibaba and they close my case wjile i was waiting on the replacement parts. No justice here