Product Description
MRD-509DS
Product Name             : MRD-509DS
Product Type               :  New Version Voice Tu…
Product Description  : Advanced voice-conducting technology offers excellent sound quality. Dual-sided design provides you comfort wear. Replaceable microphone boom and adjustable headband for perfect fit make you enjoy pleasure of communication.
Specification
Speaker:
Drive Style: Dynamic (Moving-coiled)
Outer Diameter：φ 27mm
Frequency Response: 300HZ-3.0KHZ
Sensitivity: 108±3dB (at 1 KHz 1mw)
Resistance: 150 Ω+/-20%
Microphone:
Directivity: Omni-directional
Size: φ 6.0* 2.7mm
Frequency Range : 50HZ ～ 3.5kHZ
Sensitivity: -38 ±3dB (0dB=1V/Pa, 1 KHz)
Resistance： 2.2k ohm
Model Structures:
Double earpiece design provides you comfort wear.
Advanced voice-conducting technology offers excellent sound quality.
Replaceable microphone boom and adjustable headband for perfect fit
Click-stop headband for superior fit and comfort.
Replaceable and length-adjustable voice tube MIC tube
Protein leatherette ear cushion for all-day comfort
Accessories Options:
*Foam or protein leatherette ear cushion is optional
*Intercom connecter options:4P4C (RJ9)plug, 2.5mm ,3.5mm stereo  plug or USB2.0 plug.
*M-Volume Controller (with Mic Mute) is optional.
*QD (Quick Disconnect) function is optional
*Two Standard QD plugs can be chose
Structure Features:
* Comfortable ear cushions , lightweight headband and flexible cord design, as well as adjustable microphone boom ,work to enhance every-talk’s good audio quality and all-day’s wearing comfort
*330°rotatable MIC pole .
*60mm adjustable T-Pad headband 180° rotatable joint of speaker and headband
CE, FCC certificated.
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