High-quality material: This car hot and cold cup holder is made of ABS + aluminum alloy material, with simple design, one-touch hot and cold, easy to use. Green light standby mode; touch once, blue light turns on, enter cooling mode; touch twice, red light turns on, enter heating mode. You can use DC-12V car power supply and home adapter (not included in the scope of supply) Function 2 in 1: This product can be adjusted to cooling and heating effects, you only need to adjust the specific time and temperature of cooling or heating according to your needs. It only takes a few minutes to cool or heat your drink, and the smart LCD screen on the nozzle and the light on the side of the cup will show the change of temperature mode in real time. At the same time, the mouth ring of the cup will also light up the corresponding color. Simple operation: Using the principle of semiconductor cooling and heating, the cold and heat it generates are conducted through the bottle containing beverages and water. Just press the button to heat or cool, just insert the adapter of the cup into the cigarette lighter. It takes some time to cool, about 10-15 minutes, and the beverages packaged in metal are slightly less than those packaged in other materials. Effect of conductive materials: Aluminum Greater than Steel Greater than Iron Greater than Glass Greater than Plastic<br><br>Colour:Black Material:ABS+Aluminum<br><br>Package Contents: 1 * Car hot and cold cup 1 * 12V3A car charger cigarette lighter cable<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.