Portable DVD players that can be connected to play the same DVD?

[franch]

Anyone got a pair like this? Need to be compact and lightweight. Any recommendations?

bump

we have a portable in-car dvd player with 2 screens that attach to the headrests in front - do you mean something like that? (we got it from argos)

Yes that kind of thing but I also want the DDs to be able to watch different DVDs, ideally - or is that not possible? And I want one we can use in other locations e.g. the train?