Check the listing for details. Mars MDLink Wireless Audio System for Metal Detector. Condition: New. Listed at 85.00 USD. Mars MDLink Wireless Audio System The MDLink Wireless Audio System allows you to use practically any headphones as wireless ones with your machine. MDLink is a wireless audio signal transmission system consisting of two – Transmitter and Receiver – modules. The MDLink system is composed of the most up-to-date technologies that make it possible to transmit sound over a broadcast channel without time delay and with the highest quality. There is no limit to how many receivers may be tuned to 1 transmitter, if they are all located within the coverage area of that transmitter and are all tuned to the same frequency.Includes:TransmitterReceiverO-Ring Mounting StrapUSB / Mini USB Charging CableMini USB / 6.35 mm Audio Jack AdapterSpecifications:Radio Frequency Range: 2400 - 2483.5 MHzWireless Range: ≤ 10 metersOperating Time: 15 hoursRF transmission power +4 dBmAudio Amplifier Power: Receiver - 1 WVolume Adjustment: Receiver - 10 levelsSize: Transmitter - 60x50x21.5mm / Receiver - 70.2x52x30mmWeight: Transmitter - 50 g / Receiver - 64 g