The 4Smarts UltiMAG DuoFold wireless charger 15W uses Apple's MagSafe Wireless Charging system, made for iPhone 12 or newer and all Apple Watch models. MagSafe charging is basically two things: Faster wireless charging and special magnets, on both the wireless charger and your device, that ensure that your iPhone or Apple Watch will stay exactly in place while it's charging.

This charger has an output of up to 15W, but it is also a smart charger: each device automatically gets the power delivery that it should.
For example, the iPhone 12 mini will get up to 12W and the Apple Watch will get up to 5W.
You can charge two devices at the same time, but the MagSafe wireless charger can give up to 15W in total, which might result in slower charging.

It also supports the older Qi Wireless Charging for other brands or older iPhones (iPhone 8 to iPhone 11).
However, please note that the MagSafe magnets will not have any effect on devices that do not have the MagSafe magnets.
And charging will be slower with a device that is not made for MagSafe charging.
For example, the iPhone 8 supports up to 7.5W wireless charging, therefore will not charge as fast as the iPhone 12.

It is very simple to use: just hold the back of your device to the wireless charger.

A simple, but powerful wireless charger!