Package include 1x warmer pad USB cable powered, can be used with 5V2A charging adapter/USB port power strip/power bank, etc., use this mug heater to keep your favorite drinks warm. No more cold drinks at work! 3 temperature levels:55 degrees Celsius/65 degrees Celsius/75 degrees Celsius 3 temperature constant temperature settings, can heat milk, tea, coffee, sandwiches, wet wipes and other different items Energy saving and safety: 20W low power, heating area 8cm circle, only 0.2 kWh per day, keep warm 8H will automatically power off, even if you forget to turn it off, it doesnt matter, office/apartment/dormitory use it with confidence Portable: 4.6inch diameter,120g weight, lightweight and portable, perfect for home, office or travel. Perfect gift: reward yourself or surprise your loved one with this practical and thoughtful gift. Perfect for coffee lovers and anyone who likes hot drinks.