1、NOISE CANCELING HEADPHONES: Built in high definition microphone, can be arbitrarily twisted, so that your voice is loud and clear. Provide clear dialogue even in noisy environments. 2、ERGONOMIC: Mobile phone headsets provide you with an ultra light wearing experience. The soft ear cushions and flexible headband will not cause any burden to your ears, and are comfortable all day. 3、EASY TO USE: You can easily turn on/off answering at the touch of a button, meeting all your daily needs, with less noise, clearer sound, and plug and play. 4、ULTRA DURABLE: RJ9 earphones are designed with sturdy structure and materials to ensure super performance and make them durable. The long headphone cord provides flexibility of movement. 5、SCOPE OF APPLICATION: This binaural customer service headset is a perfect choice for call centers, online courses, Skype chats, conference calls, etc. Compatible with landline phones or cordless Dect phones with RJ9 headphone jack.