Mug warmers come in a lot of forms ... even if liquid remains and even if the mug is docked. Other battery-powered mugs didn’t shut off at all as long as they were docked, slowly causing ...

The app also lets you set a countdown timer for brewing tea and even choose a color for the mug's status LED, which glows soothingly while heating is in progress and turns red when battery power ...

This No. 1 best-selling tea and espresso beverage warmer is under $100 for a limited time. Get the deal while it's hot!