Callez RJ9 Phone Headset with Noise Cancelling Mic & Volume Controls, Telephone Headset Compatible with Avaya Plantronics Mitel ShoreTel Digium Nortel NEC Toshiba Aastra Office Landline Deskphones Black industrial2 Voltage Range: 100-240V/50-60Hz

Voltage Range: 100-240V/50-60Hz

No irritant chemicals

2 NVMe SSDs 2230/2242/2260/2280

Support Various System Supports Windows 10

Callez RJ9 Phone Headset with Noise Cancelling Mic & Volume Controls, Telephone Headset Compatible with Avaya Plantronics Mitel ShoreTel Digium Nortel NEC Toshiba Aastra Office Landline Deskphones Black industrial2 Voltage Range: 100-240V/50-60HzCallez RJ9 Phone Headset with Noise Cancelling Mic & Volume Controls, Telephone Headset Compatible with Avaya Plantronics Mitel ShoreTel Digium Nortel NEC Toshiba Aastra Office Landline Deskphones Product Features Crystal Clear Calls This telephone headphone for desk phones with noise cancelling microphone enables excellent sound quality for a natural listening experience and reduce background noise and provides the crystal clear communication. The