About this item NOISE CANCELLING HEADSET: Eartec Office 510D Headset is the best in it's class for a single ear headset. Compatable with BEST HEADSET IN ITS CLASS: The eartec office 510D headset is designed to work in a more testing environment. The metal encased headband is wider than normal and the microphone boom is stiffer giving you more durability. Big ear pad and plush soft protein leatherette ear cushion ensures whole day wearing comfort. Ratchet style microphone boom, easy to be adjusted, luxurious soft designed T-Pad for convenient wearing. Click-stop headband for superior comfort. Features: Double earpiece offers superb clarity of sound, International standard hearing protection to your ears, Flex Mic boom offers adjustment and accurate position, Click-stop headband for superior fit and comfort, Leatherette ear cushion for all-day comfort 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, 2-Year Warranty Accessories Options:Foam 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). › See more product details