Portable Hand Warmer - Light Green (2 x AA)

Pros: This hand warmer is small and cute and is perfect for pockets in the winter.
Everything works well and it heats up pretty fast.
Great that it can use both AA batteries and an external power source.
Great that it has a light to tell you when it's on.
Perfect hand size.

Cons: The on-off switch is finicky. It doesn't slide all the way to off so sometimes I think it's off when I really left it on.
The on light is faint so when you're indoors it can be hard to tell if you've left it on.
Build quality could be a bit better.

Other: Great for warming your hands! I didn't see a review but took a leap of faith and can say I will definitely be buying a second one for my other pocket!

Pros: It heats up very fast. In about 15 seconds you feel enough heat. After 1 minute (without touching it) it even can hurt due to the high temp it takes. It can be powered with 2xAA or USB. Even can be modded to use 1x14500 (read other thoughts). Includes a USB to 3.5mm dc jack cable. Cheap!

Cons: With 2xAA (no matter if you use alkalines or NiMh) produces less heat than when using USB. The switch has short travel. The led is not very powerful in the daylight but at night it can be seen well.

Other: Recommended handwarmer. Good price, good quality.