Apple USB Power Adapter

Apple USB Power Adapters are marketed by Apple, each featuring a USB-A port that is rated for different age levels, depending on the power requirements of the mobile device.

Supported devices
Using a higher-rated charger than the power requirements of the device is fine, but vice-versa is not recommended.
 * Apple 5W USB Power Adapter — iPad mini (1st to 4th gen), all iPhones, all USB-compatible iPods, all Apple Watch series
 * Apple 10W USB Power Adapter — The above and iPad (1st to 3rd gen) (discontinued)
 * Apple 12W USB Power Adapter — The above and iPad (1st to 8th gen), iPad Air (1st to 3rd gen), iPad Pro (1st and 2nd gen)

Counterfeit adapters
Apple USB Power Adapters are known to be frequently counterfeited. Apple offered an special program in which customers could trade in a counterfeit adapter for a genuine Apple version for the special price of 10 from August 6 to October 18, 2013 at an Apple retail store or Apple Authorized Service Provider.