Feature: 1. Clear Calls: Mono headphones are suitable for those who like to open one ear, with built in professional volume control buttons. The 150 ohm speaker ensures perfect sound quality. Anti noise microphone to increase voice clarity. Its excellent sound quality brings a good experience to users. 2. Comfortable Earphones: Ultra lightweight mobile phone earphones with adjustable headbands, suitable for all head sizes, flexible microphones to meet your preferences, soft high quality ear cushions, can improve all day wearing comfort. Very suitable for people who answer a lot of calls every day. 3. Extensive Compatibility: Compatible for iPhone, for most smartphones and laptops, for OS X, tablet with a single 3.5 mm headphone jack. Suitable for call center employees, office personnel, customer service users, telephone workers, etc. 4. Flexible and Durable: 330° flexible Mic can be easily adjusted according to your needs. The sturdy and comfortable computer headset can withstand the harshest environments. Sophisticated design, high quality materials, one piece headband structure, gold plated plugs, plug resistance. 5. Application: Call center headsets are very suitable for Skype chat, business, truck drivers, podcasts, YouTube, Whatsapp, call centers, online courses, telemarketing, telephone consulting services, teleconferences, webinar presentations, telecom operators, hospitals, guide for Google Voice search monitoring system. Specification: Item Type: Headset Material: ABS, Metal Frequency Response: 20-20KHz Impedance: 150Ω Sensitivity: 125dB Maximum Input Power: 10MW Plug: Approx. 3.5mm/0.14in Rope Length: Approx. 1.2m/3.9ft Package List: 1 x Earphone All the items will be dispatched within one business day by Airmail after the payment is clear. Most times you will receive your order within 10-30 business days after we transfer your package to the delivery company. We cannot guarantee the delivery timeframe if the post office has any unexpected delays due to holiday,weather,customs, or other conditions. Some countries like Russia, Brazil, or some European countries may take up to 50 days or longer for delivery. We appreciate your patience if you haven't received items in 30 days(Russian customers may need more patience by reason of the local delivery system and/or customs). If you are concerned in any way, please feel free to contact us via ebay message instead of leaving negative/neutral feedback or opening a dispute. We will do our best to solve any problem(resend or refund any missingitem). Customs duty is obligation and liability of citizens in yourresponsible for any tax and custom duty incurred. Generally, thedelay or failure delivery is sometimes caused by the policy of different customs. Our listing price includes the value of goods,packaging cost,and export taxes,not including international duties. duties,taxes,and charges are not included in the item price or shipping fee. The duties are buyers' responsibility.Please check with your country's customs office determine what these additional costs will be prior to your purchase. All disputes arising from the duties will be submitted to ebay for solution. Any questions, pls. contact us via ebay message or email us. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. kindly leave us a positive feedback and give us the Detailed Seller Rating with all "5" in very area. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better.We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.