Compatible with Hearing Aid T Coil (TIA 1083 Compliant); Optional Range Extender Enhanced cordless phone Sound Quality : noise reduction automatically suppresses background interference while ...

2.5mm jack curly clable with Plx QD "Works with Ciso SPA Series and other Cordless phones with 2,5mm Standard Headset Port.(3 poles with 2 black bands), No Smart phone use. Works with Grandstream ...

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