An curved arrow pointing right. Rejoice, coffee lovers. This high-tech Ember coffee mug claims it will keep your drink at the perfect temperature — down to the very last degree. Here's how it works.

I live in London, where the Ember mug also costs £199 ... for up to 3 hours via the built-in battery. It's easy to clean and dishwasher-safe with a stainless steel interior and matte finish.

THE self-heating travel mug once sported by Rishi Sunak could be the perfect gift for the 'techy' friend or family member who just seems to have it all. The Ember Travel Mug 2+ keeps tea or coffee ...