CISCO COMPATIBILITY:【NOT for Cell Phones and Computers】This office telephone headset is compatible with Cisco office phones 7841 7945 7821 7965 7861 7811 7942 7960 7962 7841 7940 7961 8841 8811 8845 8851 8865 6941 6945 Plantronics M12 M22. SEE MORE COMPATIBLE PHONE LIST IN DESCRIPTION. | PHONE COMPATIBILITY GUIDANCE: If your phone model is not in the description list, kindly contact us for compatibility checking before purchasing. IT IS ONLY COMPATIBLE WITH SOME SPECIFIC CISCO PHONE MODELS LISTED IN DESCRIPTION. For other models, pls contact us for Compatibility Guide or Advice. | CRYSTAL CLEAR CHAT: Corded Binaural office phone headset with flexible adjustable Noise Cancelling Microphone to reduce background noise. Acoustic Shock Protection Circuit to protect your hearing. Less noise, Clearer voice. | ULTRA COMFORTABLE: Super lightweight landline phone headset with adjustable headband to fit all head sizes, soft leatherette ear cushion enhances all-day wearing comfort. Easy to set up, direct connect the headset to your phone, no additional amplifiers or adapters required. | 1 YEAR WARRANTY: We offer 30 days money back & 12-month worry-free guarantee. This RJ9 landline phone headset for cisco phone is perfect for Call Center Service, Telephone Counseling Services, Phone sales, Insurance, Hospitals, Banks etc. Business, Office and Home.

RJ9 PHONE HEADSET: ONLY WORKS for Some Specific Phone Models from Yealink T19P T20P T21P T22P T26P T28P T41P T23G T32G T38G T40G T42S T46S T48S Avaya 1608 1616 9608G 9611G 9641G J139 J169 Grandstream GXP 1400 1405 1610 1615 1620 1630 2000 2120 2124 2135 Panasonic KXT-2260 2310 2315 2365 2368 7220 Cisco Snom Zultys AltiGen and etc. Not for Cell Phones and Computers. | CLEAR CALLS: Corded mono RJ9 landline phone headset with Noise-canceling microphone filters out background noise, offering the excellent sound quality. Wideband audio delivers clearer conversations, while Acoustic Shock Protection protects our hearing. | SUPER COMFORTABLE: The light office phone headset with adjustable headband fits all head sizes, a flexible boom mic picks up your voice clearly, and soft leatherette ear cushions enhance all-day wearing comfort. Feel no burden during long-time work. | ULTRA DURABLE: Precision design, high-quality plastics, uni-body headband construction, flexible metal mic boom make this RJ9 phone headset for office phones more durable and sturdier. | 2-YEAR WARRANTY: 45 days money back & 24-month worry-free guarantee for all telephone headsets. Ideal for Counselling Service, Business, Hospital, Call Center and more. Buy the item ONLY if you have one of phone models in list. For other phones, pls contact us for Compatibility Guide or Advice.

【NOT for Cell Phones and Computers】COMPATIBLE with Yealink All IP Phones Avaya 1608 1616 9608G 9611G 9630 J169 J179 Grandsteam GXP 1200 1400 1615 1625 1630 2000 2140 2160 280 285 GXV 3005 3175 3240 3275 Snom 300 320 360 710 821 870 compatible with Panasonic KXT 2260 7220 7330 7420 7433 7665 7740 Zultys ZIP 33G 36G 37G 33i 35i AltiGen IP805 Aastra 6737i. SEE MORE COMPATIBLE PHONE LIST IN DESCRIPTION. | Yealink IP PHONES COMPATIBILITY: This RJ9 phone headset for Yealink office phones SIP-T19P, T20P, T21P, T22P, T23P, T26P, T27P, T28P, T30P, T31P, T33P, T40P, T41P, T23G, T27G, T29G, T31G, T32G, T33G, T38G, T40G, T41G, T42G, T46G, T48G, T49G, T41S, T42S, T46S, T48S, T42U, T43U, T46U, T48U, T53W, T54W, T57W, T55A, T56A, T58A etc. | CRYSTAL CLEAR CHAT: Corded office telephone Headset with flexible adjustable Noise Cancelling Microphone to reduce background noise. Acoustic Shock Protection Circuit to protect your hearing. Less noise, Clearer voice. | SUPER COMFORTABLE: Super lightweight landline phone headset with adjustable headband to fit all head sizes, soft leatherette ear cushion enhances all-day wearing comfort. Easy to set up, direct connect the headset to your phone, no additional amplifiers or adapters required. | 1 YEAR WARRANTY: 30 days money back & 12-month worry-free guarantee. Perfect for Call Center, Telephone Counseling Services, Insurance, Hospitals, Office and Home. ONLY COMPATIBLE WITH SOME SPECIFIC PHONE MODELS LISTED IN DESCRIPTION (include but not limited). For Other Models, pls contact us for Compatibility Guide or Advice.

【Compatibility Notices】: The compatibility of this telephone training adapter depends on whether your RJ9 headset is compatible with your telephone. As long as your headset is compatible with your telephone, the adapter will work properly. | 【Compatible Telephones】: This RJ9 phone splitter is compatible with Cisco, Yealink, Avaya, Plantronics, Polycom, ShoreTel, NEC, Aastra, Nortel, Mitel, GE and other IP phones. | 【Easy to Install】: Can plug either into handset port or RJ9 headset port. Allows the use of two headsets on one telephone, plug and play. This headset splitter will give you two more ports to headset or handset corded plug in, it helps with training and also acts as an extension cord. | 【Lightweight and Durable】: This telephone jack splitter is made of durable plastic material, the cord is 19.6 inches (50 cm) long , very lightweight and provides good sound quality. Moderate length doesn't take up much space, ideal for training. | 【Great for Training】: This is a telephone training adapter for RJ9 headset jack found on many telephones. Now both users can simultaneous listening / talking into one conversion via this adapter. Great use for call center / telephone marketing training.

WARRANTY GUARANTEE: 45 days money back & 24-month worry-free. This USB headset with microphone fits for Windows 2000/7/8/10/XP/Vista, Mac OS X and most all UC Platforms. Ideal for Call Center, Conference calls, Online courses, Classroom, Skype and more. | CLEAR CALLS: Professional wired USB Headset with DSP technology for clear conversations, the Noise-Cancelling Microphone minimizes unwanted noise while speaking. Plus Acoustic Shock Protection protects your hearing. Less noise, Clearer voice. | ULTRA COMFORT: This lightweight computer headset is designed for long time using. The adjustable headband fits all head sizes, a 330°rotating boom can be positioned for better voice capture, and breathable leather ear cushion for hours of comfort. | EASY TO USE: This headset with microphone for pc provides easy plug-and-play operation for PC or Laptop, no installation software needed. Simple in-line controls let you adjust the volume or mute calls without disruption. | DURABLE DESIGN: With quality plastics, uni-body headband construction, excellent quality metal mic boom, this computer headset with microphone is more durable and sturdier, customized for student, personal or professional use.

CRYSTAL CLEAR CALLS: Business-grade Wideband Corded USB HEADSET, Digital Signal Processing (DSP) and Noise-Cancelling Mic for crystal-clear conversations, Acoustic Shock Protection(ASP) to protect your hearing. | MOST COMFORT HEADSET: Ultra Lightweight USB headphones with adjustable headband to fit all head sizes, a flexible boom mic to suit your preference, soft and high quality ear cushion enhance all-day wearing comfort. | ULTRA DURABLE HEADSET: Precision design, Quality plastics, uni-body headband construction, flexible metal mic boom make this Dual Ear USB Skype headset with mic more durable and sturdier. Compete with Plantronics or Jabra High-grade Office Headsets. | SIMPLE AUDIO CONTROLS: Plug and Play, No Drivers needed for PC, Computer, Laptop, Mac…USB compatible devices. Convenient in-line Controls, easy to adjust this computer headset volume up/down, mute/un-mute the microphone or speaker. | 2-YEAR WARRANTY & WIDE COMPATIBILITY: 45 days money back & 24-month worry-free. Works with Windows 2000/7/8/10/XP/Vista, Mac OS X and most leading UC Platforms, Softphone. Ideal for Skype Chat, Business, Call Center, Conference calls, Dictation, Dragon speak, Online courses, Webinar presentations and more.

CRYSTAL CLEAR CALLS: Business-grade Wideband USB Headset, Digital Signal Processing (DSP) and Noise-Cancelling Mic for crystal-clear conversations, Acoustic Shock Protection(ASP) to protect your hearing. | MOST COMFORT HEADSET: Ultra lightweight USB headphones with adjustable headband to fit all head sizes, a flexible boom mic to suit your preference, soft and high quality ear cushion enhance all-day wearing comfort. | ULTRA DURABLE HEADSET: Precision design, quality plastics, uni-body headband construction, flexible metal mic boom make this Single Ear USB Skype headset with mic more durable and sturdier. Compete with Plantronics or Jabra high-grade Office Headsets. | SIMPLE AUDIO CONTROLS: Plug and Play, No drivers needed for PC, Computer, Laptop, Mac…USB compatible devices. Convenient in-line Controls, easy to adjust this computer headset volume up/down, mute/un-mute the microphone or speaker. | 2-YEAR WARRANTY & WIDE COMPATIBILITY: 45 days money back & 24-month worry-free. Works with Windows 2000/7/8/10/XP/Vista, Mac OS X and most leading UC Platforms, Softphone. Ideal for Skype Chat, Business, Call Center, Conference calls, Dictation, Dragon speak, Online courses, Webinar presentations and more.