Before switching from cooling to heating or from heating to cooling, the power must be turned off for at least 30 minutes before proceeding! 【 Frequently Asked Questions 】 1. The heating and cooling box is out of power? Check whether the 12V socket is properly plugged in and whether the fuse of the plug is blown. 【 Safety Tips 】 1. The power must be unplugged before cleaning. 2. Do not place the heating box or power cord in liquid. Scrub with neutral soap solution and a damp cloth; 3. Do not use it to make ice; 4. Do not block the vent, otherwise the refrigerator will heat up faster and cause a fire. 5. After the engine is turned off, do not leave it running for a long time, as this will drain the battery. 【 Name 】 : 4L Mini Car Refrigerator 【 Color 】 : Blue, White, Rose Red. No color noted on the order. Randomly sent. 【 Capacity 】 : 4L 【 Size 】 : 18*23*30cm 【 Single Package Size 】 : 28*21.5*31cm 【 Weight 】 : 1.75kg (including packaging) 【 Number of Boxes 】 8 units per box [Box Specifications] : 55*42*60cm. If you need home use, please contact customer service and add home use cables. 20 yuan per piece