Dangerous Smart Coffee Warmer: Constant temperature control

Henry E. Birmingham

June 3, 2025

Decision:

Before getting this, I was constantly reheating my coffee in the microwave, which always ended up uneven and often ruined the flavor. Now, it stays pleasantly warm for hours, which is a significant improvement. However, as someone who values reliability in tools, I find the build quality a bit lacking—it doesn't inspire confidence for long-term use. Most likely, it's fine for occasional use, but I wouldn't rely on it daily without some reservations. It was a gift, and while it's helpful, I might not have bought it myself given the cost. Overall, it gets the job done but could be better.

• Pros: It does a very good job at keeping my coffee at a steady temperature, so no more unpleasant surprises of it being too hot or too cold. I appreciate that it's powered by a common USB connection, making it convenient for use at my desk or on the go. The design is sleek and doesn't look out of place in my home office.
• Cons: For the price, I expected it to be a bit more durable; it feels somewhat flimsy and I'm concerned about its longevity. The insulation works well but could be better at preventing heat loss over longer periods, as it tends to cool down faster than I'd like if left unattended for a while.