Zhenglu Coffee Warmer with Mug Set, USB Powered Heated Cup with 10H Auto Shut-Off, 131℉ Self Heating Coffee Mug for Desk (Black-12oz)

["Keeps Drinks Warm: This self heating coffee mug keeps your coffee, tea, or hot chocolate at a steady 55°C/131°F using the USB-powered heating coaster. Perfect for work, study, or relaxing at home.","Durable & Stylish: The heated mug made from 304 stainless steel with a matte black finish. Double-wall insulation keeps heat inside and hands cool.","Smart Safety Design: The mug warmer features smart 10-hour auto shut-off and uses USB power (5V-2A) with no built-in battery. An energy-efficient coffee warmer for desk that provides worry-free daily use.","Comfort & Functionality: This electric mug features an ergonomic handle, a sliding lid with a silicone seal, and a soft blue light ring that adjusts brightness during heating.","Gift-Ready Choice: Sleek self heating coffee mug, perfect for birthdays, holidays, or office gifts. Hand wash only."]