Acclimate Gel Warmers design allows the device to warm flexible packaged products Wall and Countertop mounting option UL Listed, two stage thermal cut-off protects from overheating Available in 120V or 230V Two heating elements for faster warming times Two-year warranty- Gel Warmers, Holds (16) 20g Single-Use Packets, w/ Digital LED Readout, 1ea/cs 14-21 Days