Is the 5w adapter made for both an iPhone AND an iPad?
The wattage of the adapter will only affect the speed at such your device charges. So yes a 5w adapter will charge an iPad but at a significantly slower rate.
Answered by Appleguy
Just want to validate that this is an actual Apple product?
The ones I've ordered have been yes.
Answered by XenoChron
Specs say 5 Watts, is it also 5 volts
Yes it is both 5 Watts and 5 Volts (1.0 amp). It is also a smart charger that will automatically convert 110 volt or 220 volt input to those figures. Here is a good discussion on these chargers. https://discussions.apple.com/docs/DOC-3511
Answered by Kyle
Which charger is better to charge the Apple Watch?
Apple recommends the 5w charger for Apple Watch.
Higher watt chargers recharge more quickly but over time they can degrade the battery and shorten its lifespan.
Answered by Matthew
Can a 10W adapter be used to charge iPhones and iPads?
Yes you can use a 10w or even a 12w power adapter for any “I” products. The higher wattage will charge faster but the “I” product will only take as much charge as it needs and will not overload.
Use this ultracompact and convenient USB-based adapter to charge your iPhone or iPod at home, on the road, or whenever it's not connected to a computer.