Sho incubatorThis is an incubator for sho. Unlike ordinary electric heaters, there is no need to turn it by hand to warm it up. Simply insert it into the opening before, during, and after a performance to keep it at the proper temperature.(Do not leave it plugged in for extended periods of time, ideally up to one hour. Ideally, up to one hour. 2. 3 hours is the maximum continuous use). The thermostat function ensures that the product does not get warmer than