Listen Technologies LR-400-216 Portable Display RF Receiver (216 MHZ) Cost-effective solution to beginning or expanding your RF assistive listening system Can receive up to 19 wide-band or 38 narrow-band channels Easy-to-read LCD display with battery status, channel information, and signal strength readings 80 dB signal-to-noise ratio for industry-leading sound quality Built-in SmartCharge feature prevents overcharging