This contains an Official nintendo power adaptor and a charging cradle for the Nintendo 3DS XL.
If you have bought a 3DS XL please be aware you will need a charger (unless you are upgrading from an original 3DS or DSi DSi XL), which is available from Amazon on its own for approximately 1/3rd of the cost of this pack.
What you gain with this pack is the charging cradle, a black plastic frame that the included adaptor plugs into. To charge your 3DS XL you simply place it in the cradle and it starts charging - I bought it because I have to plug in the charging cable to my mobile phone and tablet when I'm back from work - simply being able to drop my 3DS XL straight into this saves me a little hassle and time - something that for me is worth the extra price.
The cradle has a cut out so you can keep headphones plugged into your 3DS XL while it is charging, is set at a slight angle and you are able to change games in the 3DS XL all while it is charging, although you wont be able to access the stylus without lifting the unit slightly - which is not a problem.
It dies what it says on the tin - charges without having to plug a wire into your hand held each time.