Compatibility: Various Brands of TVs, PCs, MP3 Players, CD Players, DVD Players, Projectors, Car Stereos, Home Theaters, Wired Speakers, and Headphones
Specifications: *Working range: 90’-130’ (open space) *Sound Output: 75- 80dB *Frequency: 433.92 MHz *WARNING: Do not mix old and new batteries. Do not mix Alkaline, standard (Carbon-Zinc) or rechargeable batteries. Choking Hazard: Small parts not for children under 3 years or any individuals who have a tendency to place inedible objects in their mouths.