USB Cup Warmer Coaster – 3-Gear Thermostatic Mug Heater

Keep Every Sip Perfectly Warm — Anywhere You Work

The Himist USB Heating Coaster is a compact, smart thermostatic hot plate designed to keep your coffee, tea, milk, or water at your ideal drinking temperature throughout the day. Built from premium aluminum alloy and tempered glass, this sleek coaster plugs right into any DC 5V/2A USB power source — perfect for your desk, home office, dormitory, or classroom.

Made in Mainland China.

⚠️ Please Note:

• Package includes the heating coaster and USB cable only — accessories shown in demo images are not included.
• This product keeps beverages warm — it cannot boil water.
• A USB power plug/adapter is not included. Please use a DC 5V/2A power plug for best performance.

Why You'll Love It

• ☕ 3-Gear Temperature Control — Touch the switch once for High (red indicator), again for Medium (blue indicator), and a third time for Low (green indicator).
• 🔒 Auto Shut-Off Safety — Automatically powers down after 8 continuous hours of use for worry-free operation.
• 🪶 Ultra-Compact & Portable — At just 7×102mm, it slips easily into a bag and takes up minimal desk space.
• ⚡ USB-Powered Convenience — Runs on DC 5V/2A; compatible with laptop USB ports, power banks, and USB wall adapters.
• ✨ Premium Materials — Aluminum alloy base and tempered glass surface for durability, easy cleaning, and a modern aesthetic.
• 🔁 Long-Lasting & Reusable — Engineered for repeated daily use without degradation in performance.

Specifications

Great For

• Home office and work-from-home setups
• School dormitories and study desks
• Office cubicles and shared workspaces
• Anyone who hates cold coffee or tea!

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Learn more: Nutrition.gov on cooking and food safety

Frequently Asked Questions

Q: Does the USB cup warmer coaster come with a power plug adapter?

A: No — the Himist USB heating coaster includes only the coaster unit and a USB cable. You will need to supply your own DC 5V/2A USB power adapter (such as a phone charger or laptop USB port) to power the device. Using the correct voltage ensures optimal warming performance.

Q: How many temperature settings does the USB mug warmer have, and how do I switch between them?

A: The coaster features 3 gear temperature settings controlled by a touch switch. Tap once for the High gear (red LED), tap again for Medium gear (blue LED), and tap a third time for Low gear (green LED). A fourth tap turns the unit off. The LED indicators make it easy to see your current setting at a glance.

Q: Is the heating coaster safe to leave on at my desk all day?

A: Yes — the coaster includes a built-in auto shut-off feature that turns the unit off automatically after 8 hours of continuous use. This provides added peace of mind, especially if you forget to switch it off before leaving your desk.

Q: What types of beverages and cups are compatible with this USB heating coaster?

A: The USB mug warmer is suitable for keeping coffee, tea, milk, water, and other beverages warm. It works with most standard mugs and cups with a flat base that rests on the 102mm tempered glass surface. Note that it maintains warmth — it cannot bring cold liquids to a boil.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.