Charging time 4 hours. Charging through an easy to find usb port makes these handwarmers ready for action whenever you need them. They double as external battery chargers for devices.

Good quality product. Good packaging and kit. Stylish, and easy to spot. Battery capacity and egg-like smoothness make it more than worth the trade off.

It's great for power bank, heats fast. The heating setting is adjustable and the outside texture is soft, almost like silicone. Multiple heat levels is convenient.

These electric hand warmers heat up fast and are durable enough yet still small enough to fit in my pockets. They keep my hands and my thighs warm during the cold winter days. These are a great, durable alternative to the disposable warmers.

The size and shape of this little guy fits the hand comfortably and it has a low profile so it fits in my pocket comfortably without sticking out. They are easy to operate and sized right to fit in your hand. Slim and easy fit.

Even if i got them into my gloves or mittens, they are so thick/chunky that i think i would struggle with them. Even more, the hottest (red) setting is less warm than the green (lowest) heat setting, which makes no sense. Can still be used as a backup...  Read More