The RI 900 Stereo/Mono Stethophone Receiver from Sennheiser is a compact and lightweight stethophone receiver that's ideal for a variety of listening assistance applications. The receiver has infrared technology that works with single-channel (95kHz, 2.3MHz or 2.8MHz) or stereo (2.3MHz/2.8MHz) systems. The user can switch between channels with a button on the back of the unit. LED lights indicate the currently selected channel. The receiver offers high-quality audio with excellent speech intelligibility and clear music reproduction.
The unit has a large ergonomic volume control for making easy adjustments. The lightweight design and flexible eartips offer lasting comfort, so a user can listen for hours without fatigue. The receiver automatically turns on and off when it is put on and removed to preserve battery life. Dual-mounted bow microphones are built-in to amplify surrounding conversations. The rechargeable BA 300 battery provides up to 12 hours of operation. The receiver can also be folded for convenient transportation.