Handsfree Telephone headset with RJ9 QD(U10P) cord for most of deskphones, IP phones, specially designed for call center, office, hotel and telemarketing. This headset is compatible with following IP Phones(Including but not limited) 3COM: 3102,3103 Aastra:390,470,480e, 480i, 53i, 55i, 57i, 57iCT, 6725i,6753i, 6755i, 6757i,8004,8009,8314,8324,9009,9216 9112i,9133i, 9143i,9316 cw,9417cw, 9480i Alcatel:4004,4010,4018,4019,4020,4022,4035,4037 AltiGen:500,510,600,705,710 ATCOM:R4,R3,R2,R1,AT840,AT820,AT810,AT800 AudioCodes:420HD Avaya:1220,1230,1408,1416,1603,2400,2410,2420,4610,4620,4621,4622,4624,4625,4626,4630,5410,5420,5601,5602,5610,5620,5621,5625,6210,6408,6408+,6408D+,6211,6218,6219,6220,6221,6402,6402D,6410D+M,6414,6416,6416D+M,6424,6424D+,8101,8102,8110,8400,8403,8405,8406,8410,8434D,X,8503,8510,8520,8528T,9404,9406,9408,9410,9504,9508 Digium:D40, D50, D70 Ericsson-LG: 8501,8515,8540,8815,8820,8830,8840,LIP8012D,8024D,8040L Fanvil:C68 ,C66,C62, C58P, C58,X3/X3G,X5/X5G,C01 Gigaset DE310, DE410, DE700IP, DE900IP,3000 comfort, 3020,3025,3035 Htek: UC802P,UC803P,UC804P,UC806P,UC840P,UC842,UC860P,UC862,UC902,UC903,UC913,UC923,UC924,UC926 Mitel:4001,4015,4025,4125,4120,4150,401,410,420,430,700,7000,5000,5010,5020,5040,5055,5140,5201,5205,5207,5210,5212,5215,5220,5224,5230,5235,5240,5250,5312,5324,5330,5340,5550 Nortel:M3903,M3904,M3905,M5208,M5209,M5216,M5317,M8001,M8003,T7316,T7316E,M7310,M7208,M7308,M7316,M7324,M7900,M2216,SL100 NTZK23AA,AB:(M2216):ACDI,1120EIP Polycom:CX100,CX200,CX300,CX500,CX600,CX700300,301,335,400,430,450,500(rev.Eorlater),501,550,560,600,601,650,670 Siemens: Optiset,F300E, Optipoint 410 Advance, 410 Standard, 420 Advance, 420 Standard, 500 Advance, 500 Basic Toshi-ba: Strata CIX, DP5022-SD,DP5023-SD, DP5018-S, DP5000-series,DKT 3001, 3010S, 3020S, 3020SD, 3014SDL ZYCOO:H81, H83?Wide Compatibility and Warranty? This on ear wired landline phone headset works for phone models of AVAYA Aastra Allworx Adtran Alcatel Lucent AltiGen Comdial Digium Gigaset InterTel Mitel Plantronics Polycom and so on.. Please check in PRPDUCT DESCRIPTION for compatibility list(including but not limited). If you don't see your phone model, please search for other emaiker deskphone headsets. We promise 2 YEARS warranty and 60 days money back for each office phone headset. ?High Durability? Sturdy yet comfortable office phone headset withstands the most demanding environments. Quality materials are used to ensure the headset durability, the reinforced structure is built to withstand the demanding environment and against damage on daily use at home work, call centers and offices. Lightweight and stainless headband provides high strength to withstand the 24 hours wearing. ?Lightwreight Telephone Headset? Emaiker corded desk phone headset is with built-in hearing protection PCBA to keep users against acoustic injury and sudden sound burst, any sound above 118db is filtered out, this telephone headset for landline phones, IP phones is ideal to people who are on the phone all day long, such as call center agent, home phone job, telemarketing insurance, customer services, working from home etc. ?Excellent Audio Sound?This call center telephone headset delivers excellent sound for conference and telephone calls, very crisp and clear for both ends. With a noise cancelling microphone to block out unwanted background noise and pick up loud and clear voice, this landline telephone headset with RJ9 plug and quick disconnector is ideal for noisy call centers and open offices. This wired phone headset allows you to concentrate fully on every coming call. ?Comfortable IP Phone Headset? This call center office deskphone headset with super soft leatherette ear cushion,adjustable headband to fit for different head sizes, work for all day long wearing. Microphone arm is 330° rotable for wearing microphone on left/right ear, Best choice wired office headphone for telemarketing, call centers and offices and working from home. With hearing protection care your ear health.