USB Mug Warmer Coaster | 3-Speed Thermostatic, 55–75°C

Keep Your Drinks at the Perfect Temperature All Day Long

Say goodbye to cold coffee or tea halfway through your morning! The HOMEFISH USB Thermostatic Heating Coaster is a sleek, desk-friendly mug warmer that maintains your favorite hot beverages at a comfortable, consistent temperature — so every sip is as enjoyable as the first. Made in Mainland China.

3-Speed Temperature Control

With a simple one-button press, you can cycle through three precise heat settings to suit any drink or mug type:

• 55°C (131°F) – Default setting; keeps drink temperature at ~40°C
• 65°C (149°F) – Mid setting; keeps drink temperature at ~45°C
• 75°C (167°F) – Max setting; keeps drink temperature at ~50°C

Each press raises the coaster temperature by 10°C. One more press at 75°C powers the unit off. Simple, intuitive, and precise.

Key Features

• 🔌 USB-powered – Connects easily to any 5V/2A USB adapter, laptop, or USB hub
• ⚡ 20W rated power – Efficient, fast-warming heating element
• 📏 Compact design – 11.2cm diameter, 2.4cm thin; fits neatly on any desk
• 🎨 Available in 3 colors – Pink, Green, and White to match your workspace aesthetic
• 🔧 Durable ABS + electronic components – Sturdy, heat-safe construction
• 🔗 90cm cord length – Long enough for flexible desk placement

Important Usage Notes

• This coaster maintains warmth — it does not boil or heat cold liquids from scratch. Please fill your mug with a hot beverage before placing it on the coaster.
• Best used with flat-bottomed glass mugs or cups for optimal heat transfer.
• Requires a 5V/2A power adapter (not included) for safe operation.
• Different cup materials and shapes may affect the actual drink temperature experienced.

Specifications

Perfect For

Home offices, work desks, bedside tables, and anywhere you enjoy a long, leisurely hot drink. A thoughtful gift for coffee lovers, tea enthusiasts, or anyone who values comfort at their workspace.

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For more information on safe use of electrical appliances, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: Can the USB heating coaster heat a cold drink from room temperature?

A: No — the HOMEFISH USB thermostatic heating coaster is designed to maintain the warmth of an already-hot beverage. It will not heat a cold or room-temperature drink. Always start with a freshly prepared hot drink for best results.

Q: What type of cup works best with this mug warmer coaster?

A: A flat-bottomed glass cup or mug provides the best contact with the heating disc (8.8cm diameter) and ensures the most efficient heat transfer. Mugs with uneven or recessed bottoms may result in lower drink temperatures.

Q: What USB adapter do I need to power this heating coaster?

A: You will need a 5V/2A USB power adapter (not included). Standard phone chargers rated at 5V/2A or higher work perfectly. Do not use adapters rated below 2A, as this may affect heating performance or cause safety issues.

Q: How do I change the temperature on the coaster?

A: Simply press the button once to turn it on at the default 55°C. Each subsequent press increases the temperature by 10°C (to 65°C, then 75°C). One more press at 75°C will power the unit off completely.