The problem is specific and real
You make a good coffee, you get pulled into something, you come back to a lukewarm cup and either drink it disappointed or microwave it. The Ember removes that entire pattern — the coffee is the temperature you set, an hour later. If that’s your morning, check the Amazon price.
Ember Temperature Control Smart Mug 2 (14 oz)
Coffee held at your exact temperature for 90 minutes
- Set a precise temp; it holds there on the coaster
- ~80 min battery off the coaster
- Preset temp works even without the app
C-Suit Necessities is reader-supported. When you buy through links on this page we may earn an Amazon commission — it never changes what you pay.
14 oz vs 10 oz
The 10 oz is an espresso-sized mug; the 14 oz holds a proper filter coffee or a large milk drink and has better battery. For a desk mug, get the 14. People who’ve owned the small one get the 14 oz on Amazon.
Check price on Amazon →
Battery, app, care
On the coaster it holds indefinitely; off it, around 80 minutes. Set a preset once and you can ignore the app. Hand-wash only, and don’t scrape it with a metal spoon. Check color options on the Amazon listing.
👍 What executives love
- Actually keeps coffee at your exact temp
- Preset mode needs no app
- 14 oz fits real coffee drinks
- Charging coaster included
- Clean, desk-appropriate look
👎 Where it falls short
- Hand-wash only
- ~80 min battery off the coaster
- Premium price for a mug
Who it’s for
Anyone whose coffee routinely goes cold at their desk. If you drink your coffee in ten minutes flat, you don’t need it.
Before you buy — quick answers
10 oz or 14 oz?
How long does it stay hot away from the coaster?
A very specific annoyance, completely solved.
Check Price on AmazonAmazon prices move constantly — the link always shows the current listing and any live coupon.