Blind man's watch by Voice MCU

I am working in a Toy manufacturer now and have any chance to get Voice MCU running at 4-bit or 8-bit core. It is really low cost when during mass production.

However, I find that there are several IC manufacturer proivde OTP (One Time Programing) Voice MCU whicch is very suitable for Low volume production and Hobby purpose.

APM020 is a very good example:
It consists:

• 20 sec. voice sound (can direct input wave file)
• Maximum 12 Input/Output pin.
• RISC MCU structure running at 45MHz !!!
• Easy Handle at DIP package.

I have an idea to build a Blind man' watch by it.

Any comment?