our product is a double channel machine,two handles can work at the same time.it has 4 handles (100mm,150mm,200mm and double chine) with technology of heat and cool. lowest temperature -11degrees,warm temparature 45 degrees .you can adjust the temperature and pressure whatever you are still treating specification :42*43*75cm, colour:gray black ,oem odm payment:t/t bank transfer; western union delivery time :3-5 workdays after payment; or according to clients' requests