These external speakers are a simple, yet high-quality speaker upgrade for your Q90D TTY or Sound Wizard II Personal Listening System. The speaker plugs directly into the Q-90 TTY for hands-free Hearing Carry Over calls. It can also be used with the SoundWizard II headset jack so you can hear without the use of a headset. Quick and easy to connect Enjoy Hearing Carrying Over (HCO) calls using the Q90D TTY Designed for listeners to enhance audio with the Sound Wizard II Compact size and adjustable volume controls
