You provide your own Lightning or other USB charging cable for the iPhone, iPad or other device.
The large Apple Watch charging area will charge any size Apple Watch. The built-in lithium battery has enough power to fully charge
an Apple Watch three times or an iPhone from 0% to about 85%.
You may find it most convenient to charge your watch nightly, overnight. The watch cannot be overcharged and the battery will not
suffer any harm from regular charging. Charging will stop automatically when the battery is fully charged and start again if and
when required due to ongoing battery usage.
The 12W charger charges iPads faster, but doesn't have much effect on the speed of iPhone charging since the iPhone only requests 5W
