USB Warmer Gadget Cartoon Silicone Thin Cup-Pad Coffee Tea Drink Heater Tray Mug Pad Nice Gift Pink<br><br>Cable length: about 100CM to 115CM<br><br>1. The circular diameter of the coaster is 9 cm, and the actual working part is 3.5 cm x 3 cm. When the coaster is working, the temperature of the heated part on the surface of the coaster is kept at about 50-80 degrees (except for the thermometer,<br>there is nothing on the coaster, and then this measurement result is obtained).<br><br>2. Material: silicone, electronic components: 3.5 cm x 3 cm<br><br>3. Connect the USB cable to the computer or 5V charger's power switch interface, and the coaster will start to heat up.<br><br>4. Unplug the USB cable when not in use to extend the product's life.<br><br>5. The heating effect is not obvious; It is recommended to keep warm water warm, which helps the tea or coffee cool down slowly (200 ml of warm water keeps warm at about 35-40 ℃ for a long time)<br><br>6. Warm color effect: adapter>power pack>computer<br><br>7. Thin glass flat bottom cup and metal flat bottom cup have better heating effect<br><br>Things that need attention:<br><br>1. Do not use concave bottoms, preferably thin glass flat bottoms<br><br>2. Do not let children touch the coaster when it is working<br><br>3. Turn off the power supply in time when not in use