AICNLY 10 Pcs Basalt Hot Stones Massage Set with Temperature Adjustment-Hot Stones Massage with Warmer Kit, Professional Massage Tool for Spa-Lymphatic Drainage, Relieve Tension and Muscle PainFunction of the Heating BoxThe heating box is designed to provide a safe and convenient way to heat the heating stone. It features 7 temperature control switches, temperature range of 96 F to 156 F. The timer shutdown function allows you to set the heating box to turn off automatically after 30,40,50,60,70,80,90, min. Long press the on buttonTo turn on the heating box you need to long press the on button on the remote control High Quality Natural