Feature: 1. Cooler functions. With cooling down to 0℃, your beverage will cool down or warm up in minutes.(Please note: since the sensing distance is 0‑10mm, it is difficult to completely heat or cool the beverage if the diameter is too small.) 2. For irregular bottle bottoms, such as mineral water bottles, we recommend placing 2 cm of water in the cup as a conductive medium when you use.Suitable for heating various materials like aluminum, iron, plastic, glass, etc. Among the conductive media, aluminum is more conductive, followed by steel, iron, glass, and plastic. 3. Easy to use, the car cooling cup holder adopts environmentally friendly Aluminum alloy + pp material, simple design, easy to use with one‑key refrigerator and one‑button heating. 4. Good for road trip, party, commuting, picnic, coffee‑lovers or heating milk for child. Portable size, smaller than traditional beverage fridge, good for individual or family use. 5. It has the characteristics of fast cooling speed, high efficiency, low energy consumption, small size and no pollution. It can be placed in the car water cup position, office desk and other environments. Specification: Item Type: Cooling Cup Holder Material: Aluminum Alloy + PP Color: Dark Gray Product Size: Approx. 13.6x9x17.2cm / 5.4x3.5x6.8in Weight: Approx. 749g / 26.4oz Rated voltage: DC-12V Power: 36W Minimum Cooling Temperature: 0℃ . Package List: 1 x Car charger1 x Host1 x Fixed Bracket1 x Chinese and English Manual Note: 1: Do not block the air inlet and outlet during use.2: This product can only be used on the cigarette lighter of the car with DC12V voltage output; the truck with DC24V output needs to be used with a special transformer car.3: Standard canned beverages have the best refrigeration effect, and plastic/glass bottled beverages have poor cooling effect because of the poor heat transfer coefficient of the material.4: Special adapter for home desktop use (this adapter needs to be purchased separately).