... weight 4) constant temperature control PTHW Thermostat Heating MantleSpecifications:(1) The series heating mantle is improved according to the product ... .(6) Beautiful, light weight, constant temperature control, standard shape, durable.Technical parameters: Model PTHWPower supply ~220V 50HzStirring capacity50 ... hours. Any inquiry from you is appreciated! A Class PTHW Thermostat Heating Mantle