Best Buy Tech Fest SaleEnds Sunday. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • Angle. Ember - Temperature Control Smart Mug² - 14 oz - Black.
  • Left. Ember - Temperature Control Smart Mug 2 - 14 oz - Black.
  • A smarter way to drink coffee. Experience the comfort of consistently hot coffee (or tea) at your chosen temperature. Simply, set your temperature down to the degree in the Ember app. 137°F. App includes: Personalized LED color options, Recipes and how-to guides, Tea timers and more. Download on the App Store or Google Play.
  • Design & Precision: Our award-winning design not only looks beautiful on your counter but precisely controls temperature like no other smart mug on the market. Ceramic Coating: Enjoy the pure taste of your coffee. Precision sensors detect liquid level and temperature. Ember:
  • Beyond insulation: 14 oz capacity, 80 min battery, Smart LED indicator (120F - 145F), Auto Sleep, Bluetooth when not in use, connection to app.
  • "Make it last ember: Keep your drink at the perfect temperature all day when placed on the charging coaster. Add a Sliding Lid (sold separately) and double your battery life."
  • Ember VS Others: Get to the perfect temperature faster and stay there longer with Ember's patented technology. It features all the benefits with none of the drawbacks. Ember Mug: - Normal Mug: 180F - Double Wall Vacuum Insulated Competitors: 160F - TOO HOT: 140F - Goldilocks Zone: The perfect drinking temperature (120F) - TOO COLD: 100F Time: 0 hr, 30 min, 1 hr, 1.5 hr
  • What's included: 1. Ember Mug: 3.46 inches (88.0 mm) 2. Charging Coaster: 4.60 inches (117.0 mm) 3. Power Cable: 4.5 inches (114.7 mm) 4. Ember Mug: 4.4 inches (112 mm) 5. Ember Mug: 70 inches (1778 mm)
  • At home or on-the-go, there is an Ember Mug to suit your lifestyle. Whether you want to make the most of your morning at home or head out the door, Ember Mug is designed to keep your beverages hot or cold for an extended period.
  • Give the gift of warmth. The perfect gift does exist. Whether they are a coffee connoisseur, a daily drinker, or a weekend warrior, they'll benefit from a superior beverage drinking experience - one they'll thank you for all year round. Ember.
  • School Study Sessions video 0 minutes 30 seconds
  • 3 Must-Have Best Buy Study Session Gadgets | Best Buy video 0 minutes 30 seconds

Ember - Temperature Control Smart Mug 2 - 14 oz - Black

Model:
CM191400US
SKU:
6367431
Highly rated by customers for:
Loading...

Customer reviews

Rating 4.5 out of 5 stars with 2300 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.1 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.6 out of 5 stars

Pros mentioned filter

Cons mentioned filter

89%would recommend to a friend

Customers are saying

Customers often highlight the Temperature Control Smart Mug 2's temperature control, ease of use, size, color, and sleek design as positive features. However, some customers have expressed concerns about the battery life and price. Others have reported issues with the app and connectivity. Additionally, the cost of replacement charging coasters has been mentioned as a potential drawback.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 75 Showing 1,481-1,500 of 2,300 reviews
  • Pros mentioned:
    Temperature control

    Coffee mug

    |
    |
    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    200% recommend - got it for father in law and he loves it!!!

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    So Hot, It’s Cool

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love hot coffee all day at my desk! No more cold sips from a coffee mug.

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Blue

    I would recommend this to a friend

  • Mr Coffee

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s okay could keep the coffee hot longer inside the cup

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great for coffee lovers!

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Holds a reasonable charge and can heat up cooled coffee quickly

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Blue

    I would recommend this to a friend
  • Cons mentioned:
    App

    Good mug, questionable app, low quality charger

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The mug is great - however the power supply died 8 weeks in. The quality of the power supply is a shame. The app is a bit fickle with this mug (14oz Ember2 copper).

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Copper

    No, I would not recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hello, we apologize for the inconvenience this causes you. Please reach out to us via our support link on ember.com or email us at support@ember.com, so our support team can assist you. Please note that we do have a warranty process that we can use to help you out and we do offer replacement power adapters. We look forward to hearing from you! Ember

  • cup

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It is a great cup. the battery last a long time. we just love it!

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    does exactly what it says it does. keeps my coffee hot and works great with my iphone

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - White

    I would recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hi giantsfan23, thanks for leaving a review! We're glad to hear you've been enjoying coffee at your perfect temperature in your Ember - if you have any questions or concerns, please let us know! Ember

  • Pros mentioned:
    Temperature control

    Pricey, but works great!

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got this as a gift for someone. They love it, and have not used any other mug since then!

    I would recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hi there, thanks for leaving a review and sharing this! We’re glad to hear the Ember was gifted and they've been enjoying their Ember! Ember

  • Pros mentioned:
    Temperature control

    Warm and cozy

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s works great at keeping my coffee at the best temp for drinking.

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - White

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Good buy

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    6th ember cup/mug. Now if only I could Make a decent cup of tea.

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Copper

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Last cup I’ll ever buy

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect cup for working at home! Keeps coffee hot until the last sip

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - White

    I would recommend this to a friend
  • Cons mentioned:
    Battery life

    I was disappointed

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I ended up returning this mug. It was intended as a gift for me to keep my beverages warm as I prefer to slowly dip on my tea or coffee - however, the battery life was unfortunately terrible and the unit does not charge while in use and required an app that consistently refused to pair to my phone every single time. We ended up going with NextMug that has a larger capacity, on unit controls and will remain hot as long as it's docked and contains liquid

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Blue

    No, I would not recommend this to a friend
  • Pros mentioned:
    Temperature control

    For Coffee drinkers

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best way to keep coffee warm. You will enjoy each sip.

    This review is from Ember - Temperature Control Smart Mug 2 - 14 oz - Blue

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought for the wife she is a coffee Lover does well at keeping it warm at work and at home

    I would recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hi Erik, thanks so much for sharing this! We're happy to hear the Ember was gifted and your wife has been enjoying her mug! Ember

  • Pros mentioned:
    Temperature control

    Ember

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Awesome technology, works as advertised, purchased 8 already plus the travel mug

    I would recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hi Squid, thanks for sharing this with us! We appreciate your support and hope you continue to enjoy your Ember Mugs - if you have questions or concerns, please feel free to reach out to us so we can help! Ember

  • Pros mentioned:
    Temperature control

    Fancy

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Just a very cool thing to keep on desk. Very useful is shuffling between meetings and need a warm cup.

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great idea

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My wife loves tea. My wife loves gadgets. Boom, perfect Xmas gift. Keeps her hot tea HOT.

    I would recommend this to a friend
    • Brand response from Ember, Inc.
      Posted .

      Hi there, thanks for leaving a review and sharing this! We’re glad to hear your wife has been enjoying her perfect temperature with her new Ember Mug! If you have any questions or concerns, please feel free to reach out to us. Ember

  • Pros mentioned:
    Temperature control

    Love it!

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love it, easy to use and keeps my coffee hot for a very long time.!!

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great Mug

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love this mug! Works exactly as advertised! Love it!

    I would recommend this to a friend
  • Pros mentioned:
    Temperature control

    Great gift

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    That convenience to control the temperature with your phone without any issues throughout the day.

    I would recommend this to a friend
Page 75, Showing 1,481-1,500 of 2,300 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.