The Ember Smart Mug 2 will keep your coffee warm for hours - and it's on sale

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Deal: Right now at Best Buy, you can save $40 on the 10-ounce Ember Mug , bringing the price down to around $90. Need a bigger cup? The 14-ounce model is also on sale for $50 off.

The Ember Smart Mug 2 lets you set an exact temperature for keeping your coffee, tea, hot chocolate, and other beverages at the perfect drinking temperature. This makes it an almost perfect desk companion for professionals and college students.

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If you're like me and constantly forget your morning coffee, the Ember Smart Mug 2 is a lifesaver. Because nothing is more upsetting than hot coffee that has gone stone cold, the Ember Smart Mug 2, with either a 10- or 14-ounce capacity, is great for your morning pick-me-up or afternoon tea break, keeping your drinks at the perfect temperature for up to 90 minutes.

You can set custom temperatures from 120 to 145F for a nearly perfect sipping experience. And with the integrated LED light, you can see at a glance whether your mug is still keeping your drink warm or needs recharging.