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Shenzhen Power-Time Tchnology Co.,Ltd Activity: Electronics Contact person : Sherry Address : 4F HBJ Building,Minzhi Rd, Shenzhen, , CHINA, 518131 Telephone : 86-755-28193910 Fax : 86 755 28197765 Email : info@power-time.com Web site : www.power-time.com Acoustic tube ear/microphone for two-way radio transceiver Talk and listen without holding the radio High-quality transparent acoustic earphone made of durable, surgical grade tubing for great comfort and a low-profile cook Clear sound performance The unite provides and discreet communication Available for Icom, standard, Yaesu, Motorola, transceiver and other brands Properties: Microphone: Sensitivity: -36dB +/- 2dB Impedance: 2.2K ohms Speaker: Sound pressure level: 103dB +/- 3dB Impedance: 32 ohms +/- 15% Audio output: 30mW posted on: 2005-01-10