Handwarmers are a great alternative to the disposable options. Can be used in addition to and toss one in a hand * to keep the * warm and cuts through the chill. Great to have in your pocket on a cold day.

Fantastic product. Packaged nicely. Worth every penny. No complaint yet.

Charging takes a couple of hours. Lasts a long time on a single charge. I am very impressed with how long the charge last and how well they work.

The heat option in low settings is enough to keep you toasted. The hand warmer function is awesome.

Makes almost no heat when turned on. Even more, the hottest (red) setting is less warm than the green (lowest) heat setting, which makes no sense. Let it charge overnight and the light came on and turned off within a few minutes.

Only received one unit. Very disappointing. Can still be used as a backup battery but wasn't the intent of purchase.