NeweggBusiness - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - once you know, you Newegg.
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Battery Power: Up to 10 hours of use (4 hours = fully charged)
Wireless Range: Up to 40ft/12m from USB wireless transceiver
Noise-cancellation: Flexible, noise-canceling microphone