Outdoor photography on a cold winter day can be challenging trying to balance keeping hands warm but allowing the dexterity to work the seemingly-ever-shrinking controls on cameras and lenses. I picked up a couple rechargeable hand warmers to try and they’re working out great. I keep a warmer in a coat pocket along with a spare camera battery. Wearing light polypropylene glove liners, I can work the camera with little trouble and then just slip my hand in the coat pocket and grasp the warmer to get the fingers toasty in no time. Keeping the spare battery warm in the pocket keeps the camera battery viable when it needs to be switched into duty.
The MJ Gear warmers I picked up are rechargeable via USB. They have some extra features that are handy as well. You can use one as a source of power to recharge your cell phone or other USB-rechargeable device, it has two power settings for the warmer (I’ve found the low setting is all that’s needed most of the time), and it has a powerful little LED light that could come in handy. This combination of features makes these hand warmers more appealing than the chemical pack or lighter-fluid powered alternatives.
Frostbite and photography don’t work well together–hand warmers keep things comfortable on those cold outings.