The sunglasses that Tom Cruise wears in the beginning of the movie Mission: Impossible II are the famous Oakley Romeo sunglasses. The futuristic looking Oakley sunglasses contain a audio visual presentation of the mission. Unfortunately the glasses have a self-desctruction mechanism, so Tom throws them away just before they explode.
The original Romeo sunglasses are not available anymore. On eBay they fetch really high prices (see Oakley Romeo eBay listings).
Complete the look
Ethan Hunt wears a slightly modified Casio G-Shock DW6900 watch in the film.