Reddit reviews Dual USB & 12V Heated Mug - RED
We found 4 Reddit comments about Dual USB & 12V Heated Mug - RED. Here are the top ones, ranked by their Reddit score.
Size: 16 oz., Available in RedDouble insulated Stainless Steel MugSpill proof lid, Soft rubberized finish, Soft grip rugged handleIncludes one USB plug for your desktop & one 12V plug for the carPlugs into your USB port or 12V auto adapter… keeps your coffee steaming while you work or drive
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Now that's an idea...
edit
https://smile.amazon.com/Dual-USB-12V-Heated-Mug/dp/B000J6CJEU?sa-no-redirect=1
Not exactly what you're after, but my dad's got a travel mug that you can plug in to your computer or 12V car adapter. Similar to this, actually. Works pretty well!
How does this look? It's the only one I could find with USB. The ratings are fairly low, though, so I'd recommend getting a decent thermos. A good one can keep your coffee warm for several hours.