High quailty Sony lens makes watching more enjoyable and flow smoothly. With original lenses on your DVD player, you can avoid scratches on your expensice DVDs and movies won't jump from one scene to another. Also, with the built-in HDMI and simple connection between your mobile phone and the HD909B, you can enjoy your games on a whole new level. Your movies and music on your mobile phone can also be shared with everyone you're travelling with. A built-in FM transmitter can send the audio signal in the headset to the head, then all passengers in the car can share the same audio. With these 9 inch HD Car Headrest Monitor Pillows, you'll never have a boring car ride again!