Power Type: Lithium Battery. Music Sharing Range: Approx. 500M / 1640.42ft. BT Range: Approx. 20M / 65.62ft (No Obstacles). Intercom Range: Approx. Half-Duplex Intercom Range: Approx. 300M / 984.25ft.
Smart Noise Cancelling Business Headphone For Customer Service ^^
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