Ember Temperature Control Smart Cup, 6 oz, Copper, App Controlled Heated Coffee Cup, Ideal for Espresso-Based Drinks such as Cappuccinos, Cortados, and Flat Whites

TLDR Review: Ember Smart Cup 6 oz

Published: May 26th, 2026

Verdict

This Ember Smart Cup offers impressive heat retention and a sleek design for small coffee servings, making it ideal for espresso lovers who want a stylish, personalized experience. However, its persistent software glitches, unreliable Bluetooth, and interior finish issues are notable drawbacks. If you value flawless app connectivity and long-term durability, you might want to consider alternatives or keep waiting for a version that addresses these concerns. For a more hands-on, manual control experience without Bluetooth headaches, you could explore other heated mugs or thermal cups.

Top pro:
Significantly improved battery life compared to earlier Ember models, allowing over 4 hours of hot coffee with a silicone lid
Top con:
Bluetooth connectivity is unreliable; app re-pairing and adjustments can take 10-15 minutes and often fail
Get an alert when the price drops or it comes back in stock.

Pros

  • •Significantly improved battery life compared to earlier Ember models, allowing over 4 hours of hot coffee with a silicone lid
  • •Excellent at maintaining the temperature of small coffee servings, perfect for espresso-based drinks
  • •Compact 6 oz size makes it ideal for quick, single-serving coffees and personalized sipping
  • •Sleek, high-quality design with an attractive copper finish and comfortable thicker lip
  • •Highly valued by users who enjoy a beautiful, modern look that feels premium
  • •Compatible with the same lid and charger as previous Ember mugs, providing added versatility
  • •Well-balanced weight and interior finish contribute to a pleasing drinking experience—though watch out for wear over time
  • •Perfect for those who want to enjoy hot coffee over an extended period in a small volume
  • •Better at retaining temperature than many comparable mugs, making it a favorite in the Ember lineup
  • •Recommended for users who prioritize style, compactness, and extended heat maintenance in a small mug

Cons

  • •Bluetooth connectivity is unreliable; app re-pairing and adjustments can take 10-15 minutes and often fail
  • •Software and firmware issues persist, with no fixes from the manufacturer in this newer version
  • •Interior finish tends to peel after about a year, which could pose safety concerns and diminishes value
  • •Limited charge capacity—around 1.5 cups—less than some users need
  • •The small size (6 oz) may not suit everyone, especially those who prefer larger drinks
  • •The device is quite expensive, and ongoing connectivity and durability issues contribute to dissatisfaction
  • •The interior erosion problem is not covered beyond the warranty, and customer service was unhelpful
  • •Some users find the device heavier than expected, impacting portability
  • •Using the mug on the charger plate during use can improve performance, but it's not always practical
  • •Overall functionality and app performance feel underwhelming, despite promising hardware improvements
Find it on Amazon
View on Amazon

We may earn a commission when you buy through these links, at no extra cost to you. How ShopSavvy makes money

How we researched this

About this review: it summarizes the professional reviews and customer ratings ShopSavvy collected for this product, alongside prices from ShopSavvy's price data.

Get ShopSavvy
ShopSavvy is totally free and works on all popular phones and browsers
Download ShopSavvy AppDownload ShopSavvy App

Compare prices across tens of thousands of stores, set price alerts, watch for deals by keyword, and much more.

Install ShopSavvy Browser ExtensionInstall ShopSavvy Browser Extension

Compare and track prices automatically while you shop online at thousands of websites.