Unisar TV920 3.5mm/ 6.3mm Connector Supra-aural Rechargeable Stereo Wireless TV Headset Type: Wireless Frequency Response: 40Hz-12KHz THD: 1% Signal to Noise Ratio(SNR): 40 dB Power Supply: 12V, 200mA AC adapter for transmitter 2 rechargeable AAA batteries for headset Wireless Type: IR Operating Time: Over 15 hours Distance: 33 feet (10 meters)
