A4Tech RH-300 Wireless Headphone with Mic Black and White
Enjoy music and calls in HD audio with enhanced bass and noise cancellation technology. Lithium Ion battery allows up to 8 hours of continuous talk time. Automatic optimal channel selection avoids RF interference. Dual antenna for better overall reception from all directions and at a distance. 1 USB receiver connects up to 4 headsets at once. Mute microphone or speakers from a distance.