... ,ROHS,CB,ETL,UL,GS,CCC,CQC,PSE Description:Electronic lunch box VL-3031) 110-127V or 220-240V,50-60Hz,heating ... power:50W.2) Surround stereo heating, rapid and uniform. 3) Stainless steel container 4) Double layer anti scald ... .08kgsGross Weight:18.53kgs3) 1pc/ color box , 6pcs/ carton1320pcs/ 20' 2760pcs/40' 3420pcs/40'HQWelcome to inquire and visit our factory!! electronic lunch box