Headset for customer service, phone headset, speaker, volume adjustment, mute microphone, RJ9 headset for business in black

Headset for phone, microphone to adjust volume level, headset for business Monaural RJ9 in black color. Feature: 1. High-definition noise reduction: The phone headset has a built-in high-definition microphone, providing clear conversations even in noisy environments. Can be twisted at will. 2. Comfortable to wear: The RJ9 business headset features soft ear cushions and a flexible headband with a very lightweight design to ensure you focus on your conversation with long-lasting comfort. 3. Easy to use: The business headset has an RJ9 plug; plug and play, no driver required, easy to use. Supports volume adjustment and microphone mute. 4. Flexible and durable: The headset with strong construction and materials designed to ensure excellent performance and make it durable. The long headset cable provides flexibility for mobility. 5. Applies: Call center headset suitable for devices with RJ9 headset interface. Ideal for home offices, call centers, remote marketing, insurance, customer service, remote conferences, etc. Specifications: Item type: Call center headset Materials: ABS Color: Black Model: H390-RJ9-MV Type: Mono Components: Crystal head RJ9 Function: Talk, volume adjustment, microphone mute Application range: For devices with RJ9 headset connector Headset parameters: Sensitivity: 105±3 decibels (at 178 millivolts 1 kHz) Impedance: 150±15Ω (at 1 kHz) Frequency response: 100 Hz-10 kHz Distortion: ≥5% (at 178 millivolts 1 kHz) Microphone parameters: Directionality: Unidirectional Sensitivity: -40±2 decibels (2.0 volts, 2.2 kilo ohms, 1 kHz) Distortion: ≥5% (at 4.5 volts 2.2 kilo ohms 1 kHz) Frequency response: 200 Hz-6 kHz Current consumption: 100-500μA Package list: 1 × Call center headset 1) We accept PayPal, Western Union, T/T. All major credit cards are accepted through secure ESCROW payment processor. 2) Payment must be made within 3 days of order. 3) If you cannot checkout immediately after auction closes, please wait a few minutes and try again. Payment should be completed within 3 days. About shipping 1. Worldwide shipping. (Excluding some countries and APO/FPO) 2. Orders are processed promptly after payment verification. 3. We ship to confirmed addresses. The order address must match your shipping address. 4. The displayed images are not the actual item and are for reference only. 5. Transit time is provided by the carrier and excludes weekends and holidays. Transit times may vary, especially during holiday seasons. 6. If you do not receive your shipment within this period, please contact us. We will track the shipment and reply to you as soon as possible. Customer satisfaction is our goal! 7. Due to stock status and time zone differences, we will choose to ship your product from our first available warehouse for quick delivery. 8. We, the seller, are not responsible for import duties, and the buyer is responsible for them. Any dispute arising from this is unreasonable. 9. Please provide your CPF or CNPJ file if you are a BR buyer, it will be better for faster processing. Thank you. Returns and refunds 1. You have 7 days to contact us and 30 days to return from the date you receive it. If this product is in your possession for more than 7 days, it will be considered used and we will not refund or replace your money. No exceptions! Please note! The buyer bears the shipping cost. 2. All returned items must be in original packaging and you must provide us with the tracking number, the specific reason for the return, and your order number#. 3. We will refund the full winning bid amount upon receipt of the product in its original condition and packaging, with all components and accessories, after both buyer and seller cancel the transaction on AliExpress. Or you can choose to get a replacement. 4. We will cover all shipping costs if the product(s) are not as advertised. About feedback We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important, we ask you to contact us immediately before giving neutral or negative feedback, so we can resolve your concerns satisfactorily. It is impossible to address issues if we do not know about them!