Headset Key Features:

Noise canceling microphone perfect for noisy environments
Over the Head design with adjustable headband to fit different head size
Mic arm rotating by 300degrees， allowing the headset to be worn on either ear.
Plug : RJ9 for telephones
Dual large earpieces allows you to concentrate and boost your productivity.

Other description:

The microphone (Mic) is noise-proof and can screen 90% background noise so as to perfectly and truly present the sweet voice of the telephone operator.
The flat speaking tube shows the unique design and high quality even more and can rotates by 300 degrees.
Head clip can stretch freely so that you can wear it comfortably.
The voice communication effect is super clear
TWO-year free warranty is guaranteed.

Products detsil showing:

CR-11

CR-33

RJ9

Please make sure see compatible models below.This list is not all inclusive

Please let us know if you find more compatible phones or incompatible phone models.

Aastra/Packet8/8x8

AltiGen IP Phone

Avaya 4600 Series IP
ESI 48-Key IP Feature Phone and 48-Key Digital Feature Phone
GE Model 2-9451
Inter-Tel
Mitel IP
N E C
Norstar
Nortel IP 1120E IP， 1140E IP， 1150E IP， i2002 and i2004
Nortel IP - 1230
Nortel Meridian Norstar Northern Telecom: T7316， T7316E， M7310， M7208， M7308， M7316， M7324， M7900， M2216， M3903， M3904， M3905， M5208， M5209， M5216， M5317， M8001， M8003， SL100， model NTZK23AA， AB: (M2216):ACDI

3Com:

3102 &3103 Telephones

Aastra:

2465，2564， 480e，480i，，53i，55i，57i，57iCT，6753i，6755i，6757i， 9112i，9133i，9143i，9480i

M4000， M4020， M5208， M5209， M5216， M5317，

M7900， M8001，M8003，M9009，M9516，

Powertouch 480/480e/480i Telephones

，i2002，i2004， i2004IP(not compatible with i2400 phase II and i2004 POE phones)

Alcatel-Lucent:

4004，4020，4022，4035，4037 Telephones

AltiGen phone Models:

500，510，600，705，710，720

Ascom:

Berkshire 200， 400， 600， 800， SD30， MR30， MR51， MR61

AVAYA / Lucent:

6402D， 6408D+， 6416D+M， 6424D+M， 8403， 8410D， 8434DX

4406D+， 4412D+， 4424D+， 4424LD+

2410， 2420

4610， 4620， 4621

5410， 5420

5610， 5620

DT1， DT3， DT5

Cable & Wireless:

CWB 100H， CWB 200H， CWB 500， CWB 600

Comdial:

8312 8412

Commander NT40:

Commander NT Economy，Standard，Advantage， Principle

Doro/Audioline

AUB3MW， AUB6MW， AL505， Casino， Congress 100， 200， X50， Sim 200， Sensor 500， TEL15HS

Ericsson

Dialogue 4147， Dialogue 4186， MD110

ESI:

ESI-48-Key IP Feature Phone and 48-Key Digital Feature Phones

General Electric:

GE Telephone Model 2-9451， 2-9490

GrandStream IP Phones:

Budgetone 101，Budgetone 102

GXP280

Provide 15 days return， 1 month replacement and 2 years maintenance warranties.