The UUSB4 adapter has an integrated sound card chip to convert most PC headsets with 3.5mm mic and 3.5mm headphone jacks over to USB.

Mute switch box: EasyDisconnect to mute switch box to EasyDisconnect. To be used between bottom cable and headset. Accessory for: CC 510, CC 515, CC 515 IP, CC 520, CC 520 IP, CC 530, CC 540, CC 550, CC 550 IP, SH 230, SH 230 IP, SH 230 IP USB, SH 250, SH 300, SH 330, SH 330 IP, SH 335, SH 350, SH 350 IP

Open microphone and open speaker on both the trainee and trainer side, with the option to mute the trainer at any given time. Accessory for: CC 510, CC 515, CC 515 IP, CC 520, CC 520 IP, CC 530, CC 540, CC 550, CC 550 IP, SH 230, SH 230 IP, SH 230 IP USB, SH 250, SH 300, SH 330, SH 330 IP, SH 335, SH 350, SH 350 IP

"Y" Cord allows two headsets to be connected to a single bottom to be used in training purposes. For Sennheiser headsets. Accessory for: CC 510, CC 515, CC 515 IP, CC 520, CC 520 IP, CC 530, CC 540, CC 550, CC 550 IP, SH 230, SH 230 IP, SH 230 IP USB, SH 250, SH 300, SH 330, SH 330 IP, SH 335, SH 350, SH 350 IP

Additional battery pack for BW900.

Business class wireless office headset. It is the office headset with intelligent sound quality, 100 meter range and mobile phone compatibility.

Though not specifically marketed for speech recognition, these headset solutions however have been proven to work at the highest performance level in speech recognition applications.

Business class wireless office headset. It is the office headset with intelligent sound quality, 100 meter range and mobile phone compatibility.

For use with Sennheiser's SH & CC headsets only and compatible with Avaya 1600 & 9600 Series phones with dedicated headset ports.

The CC 510 is ideal for professionals who use the phone but still need to hear what’s going on around them. The single speaker delivers excellent sound while the adjustable headband ensures maximum comfort, all day.