Listen to game with these Indianapolis Colts Noise Isolating Earphones.  These Indianapolis Colts Earphones natural sound reproduction and wide dynamic range.  Outstanding bass response and treble clarity.  Compatible with any stereo audio devices, including Ipod, iPhone and other MP3 players.  

Frequency range- 20hz-20khz

Impedence - 16ohms

Sensitivity- 107db

Officially licensed NFL product