Will be presenting at the NY Tech Meetup on Jan 4th...Need Feedback

Hey guys i am the founder of Deaftel and got invited to speak at the New York Tech Meetup this january 4th.

Deaftel is a phone service for the deaf, hard of hearing and speech impediments. It converts a hearing persons voice into text and sends that text response to a deaftel users smartphone. He/She can then type back their response and deaftel converts that into voice and plays that for the hearing person on the other side of the phone.

I made a quick demo of the service here http://www.youtube.com/watch?v=TK4IvZdwQ5o

Would love to get some feedback on the best way to present it.

- Kunal Batra