BRAND NEW still in box Lumirio Coffee Mug & Cup Mug Warmer

never used never opened brand new. Lumirio Coffee Mug & Cup Mug Warmer, Coffee Mug Warmer Set Heated Mug Real-time Temperature Display USB Rechargeable 12.3 oz for Winter and Summer Office Coffee mug warmer USB rechargeable to keep your coffee/milk/tea at a constant temperature all day long in winter and at the air-conditioned office in summer (up to 131°F / 55°C) LED Temperature Display to see the real-time temperature by simply touching the mug lid Built-in Thermostat & Laminated Heat Conduction Cup to enjoy warm coffee/milk/tea/other beverages at desired temperature 10W/2A power for lower energy consumption and safer performance Better warmer than heater to keep your warm drinks at a constant temperature, slow to heat freezing drinks to a desired warm temperature