Ember Smart Mug 2

Ember Temperature Control Smart Mug 2 (14 oz / 414ml)

A ceramic-coated smart mug that keeps your coffee or tea at the exact temperature you want, for as long as you're drinking it — solving the classic "cold coffee by the second half" problem.

Key features:

  • Precise temperature control — set anywhere between 48.9°C–62.8°C via the Ember app

  • 80 minutes of battery life off the coaster at a typical setting, or all-day warmth while sitting on the included charging coaster

  • Works without the app too — defaults to 57°C and remembers your last used setting

  • Auto sleep/wake — senses when it's empty or idle and powers down; wakes when it detects liquid or movement

  • App extras — custom presets, notifications when your drink hits temperature, and control from your phone

  • IPX7 waterproof rated — fully submersible up to 1 metre, so cleaning is easy despite being hand-wash only

Good to know before buying:

  • Hand wash only — the ceramic coating isn't dishwasher safe

  • Heats only — no cooling function; if you want cold drinks kept cold, Ember sells a separate tumbler for that

  • Some UK reviewers on Android have reported a fiddly initial Bluetooth pairing process (holding the button, pairing via phone Bluetooth settings before opening the app) — usually a one-time hassle

  • 14 oz size runs a shorter battery life (80 min) than the smaller 10oz version (up to 1.5 hrs) — factor that in if portability matters more than capacity

  • Not a travel mug — no lid included, so it's designed for desk/home use rather than commuting (Ember sells a separate Travel Mug for that)

Best for coffee or tea drinkers who linger over their drink at a desk and want it hot the whole time, not just when poured. If you need it to travel with you or want cold-drink support too, look at Ember's Travel Mug or Tumbler instead.

(Paid link)