Yes, it's all complete.

No that is not possible, there is no HDMI output. I would also strongly advise against buying it, because this device is actually electronic waste, on 9 inch size there is only it a lousy resolution of ridiculous 640 x 234 pixels. Every tablet offers a much higher resolution. This alternative has a much better resolution of 1024 x 600 pixels, a little more expensive, but you get a much better picture. Caliber Headrest DVD Player Monitors (Portable DVD Player) And for not much more you can also get this set, which even includes two headphones, the set also has a resolution of 1024 x 600 pixels: Lenco DVP-1045 (Portable DVD Player)

Everything is there for connection, but the set is not to be recommended, because it offers a lousy resolution of only 640 x 234 pixels. Although a little more expensive, but including two headphones, I would recommend this one, which has a much better 1024 x 600 pixel resolution: Caliber Headrest DVD Player Monitors (Portable DVD Player)

Hello, yes the price is for two screens. They recharge via cigar lighter (cable included), they have a certain autonomy even without cable. Greetings Simone