It's a portable bone-density scanner. A medical device I sell for a living.

8 seconds sound clip from the The Pursuit of Happyness movie soundboard.

You can hear this line at 00:05:35 in the Blu-ray version of the movie.

Quote context

[...]

- This is part of my life story. This part is called Riding the Bus.

- What's that? It's a time machine, isn't it? Seems like a time machine. That seems like a time machine. It's a time machine. Take me with you.

- This machine... This machine on my lap...

- This guy, he has a time machine. He... He... He travels. He travels in the past with this machine and...

- It is not a time machine.

- It's a portable bone-density scanner. A medical device I sell for a living.

- Thank you for the opportunity to... To discuss it with you. I appreciate it.

- We just don't need it, Chris. It's unnecessary. And expensive.

- Well, maybe next...

- Thank you.

- It gave a slightly denser picture than an x-ray... for twice the money.

[...]