• FM Hi-Fi wireless headphones;• Wireless reception from TV;• Wired reception to MP3 player;• FM radio & wired reception from PC, CD, DVD players;• Freq range: 85MHz-108MHz;• 40mm driver;• Sensitivity: 105dB /-3dB;• Imp: 32ohm ;• Black; HEIGHT X LENGTH X WIDTH: 3.5 X 10.9 X 8.7 WARRANTY: ONE YEAR RETURNABLE: Yes