Coffee Mug Warmer, MQ USB Cup Warmer, Coffee Warmer with Anti-Slip Base, Tea Warmer Coaster for Home Office Desk (Black) by Amazon.co.uk

• 【WHY BUY IT】: Light weight and compact size, easy to carry and fits most stainless steel tumblers, baby bottles, ceramic cups, glass tumblers, etc.

• 【HOW TO WORK】: Powered by all devices with 5 V USB port output, such as your computer, desktop, laptop, tablet, mobile power supply and so on, easy and convenient.

• 【WHAT IS MADE】: Made of walnut wood and high quality metal materials, heating evenly, safe and durable to use.

• 【WHERE TO USE】: Keep your coffee, tea or other hot drink warm, do not worry about high temperature and high oxidation, safe for use. Ideal for use at home and in the office, keeping you warm in cold weather.

• 【WARM TIPS】: Suitable for most stainless steel cup, ceramic cup, glass cup, etc. But not suitable for mineral Water bottles, adiabatic vacuum cups or cups with thick bottom.