japanese-style electric lunch box double-layer plug-in stainless steel bento student heating insulated lunch box for lunch office workers portable

single layer (double liner) double layer (four liner) single layer (double liner) + tableware + detergent + scouring pad double layer (four liner) + tableware + detergent + scouring pad double layer (four liner) buggy bag + tableware + detergent + scouring pad single layer (double liner) buggy bag + tableware + detergent + scouring pad

domestic plug british regulatory plug europlug american standard plug 110v voltage