well I don't have experience using it...but I did just buy one for my DS5, but have not opened it yet.
What I know of it is that it has backward compatibility so it will play Gameboy Color & Gameboy Advance games.
The batteries are supposedly lasting 18 hours w/out the backlight on and approx. 10 hours with constant use of the backlight.
The battery charger is also included in the box.
Same game, just different design.
I was told that you need to charge the battery 3 hours prior to first use.
Toys R Us had a great box style carry case w/strap, platinum color with room for game cartridges for $11.99 so I bought that too.
P.S. A new Disney Motocross game was due to be released yesterday for Gameboy, so I'm looking for that for our road trip.
HTH,
Lori