Four USB connectors - Charge Your Phone on the Go
The USB cable that comes with this hand warmer can be used to charge the battery at your convenience, but it has other uses too. It comes with four USB connectors, suitable for mini-A and mini-B USB ports, as well as Android and Apple devices, allowing you to charge your phone on the go. Since the handwarmer has a USB 2.0 port, and a micro USB port, you can easily plug another USB cable into the handwarmer if the connectors provided are not compatible with your phone or you would like to charge the device from the mains. One full charge of the hand warmer will be able to charge a modern smart phone up to 3 times. USB devices are very versatile; any mains adapter should work with any USB device, with no danger of overheating, unlike other forms of mains plugs.