Dual 3.5mm Binaural Headset, AGPtek Hands-Free Call Center Headphone for Laptops PCs Computers with Noise Canceling Mic + 3.5MM QD + Volume Mute 1. BEST SOUND QUALITY FOR HIGH CLEAR COMMUNICATION: It has not only noise canceling microphone to reduce background noise but also 150ohms speaker to ensure the perfect voice quality 2. HEARING PROTECTION: Its Acoustic Shock Protection circuit to protect your hearing. Its soft ear cushions can protect your ears from long-time wearing injury or earache. 3. COMFORTABLE WEARING: Its flexible goose neck Mic boom, adjustable headband and super soft ear pad on both sides, will probably provide you comfortable wearing even 24 hours a day. 4. QUICK DISCONNET: 3.5MM Quick disconnect is an essential feature for Professional headset. With quick disconnect cord, users can change the length of the headset line for better wearing in seconds. 5. HIGH DURABILLITY: Made of high quality and workmanship. It can fully adapt to 7 x 24 hours for high frequency.Headset head can freely telescopic, moderate elasticity, comfortable to wear. Headset head can freely telescopic, moderate elasticity, comfortable to wear.