
Frequently Asked Questions
How long does the hand warmer stay warm?
Ember Duo provides up to 6 hours of consistent heat on a single charge, depending on your chosen temperature level.
Is it safe to use for long periods?
Yes. It features smart overheat protection and an intelligent temperature-control system that keeps you warm without overheating.
Can I charge my devices with it?
Absolutely. Ember doubles as a portable power bank, allowing you to top up your phone or earbuds via USB-C.
Does it come as one piece or two?
It’s a dual magnetic design — use both halves together for extra warmth or separate them to share with a friend.
✔ Warmth in 3 seconds

