Bought this for my 5yr old and he loves it but I would not recomend this unless you own stock in batteries!!!
The games for it are expensive too. We bought a charger for it and as long as ur child sits by a plug it works great but my child wont sit in one place for long so it didnt work out for us.
Jack, age 5, likes to use an iPad or iTouch more than the MobiGo but the MobiGo does keep him entertained with educational games when it makes sense to have the more durable and more expendable MobiGo in his hands.