The LS-54 72MHz RF system from Listen Technologies revolutionizes how an RF system works, offering precise clarity with 20 decibel less hiss than other RF receivers. The integrated neckloop improves the listening experience for users with hearing aids and cochlear implants with telecoils. The iDSP receiver has a field replaceable and rechargeable lithium-ion battery with up to 8 hours of use. The result is an innovative personal listening technology and solution that delivers an exceptional listening experience in public venues that provide listening devices. Features:Advanced DSP SQ™ noise reduction technology delivers 20 decibel less noise and hiss than any other listening deviceIntegrated neckloop/lanyard with DSP loop driver improves the listening experience for t-coil usersAdvanced green battery technology reduces cost of ownership and hassles; up to 8 hours of use on a full chargeiDSP is the smallest device of its kind, making it easier to wear and easier for venues to dispense, store and maintainOLED display to program channel names, monitor battery status, channel status and charge activationIntegrated neckloop/lanyard and signage meets minimum legislative requirements for venues with a capacity up to 100Receiver dimensions: 3.75″ x 2″ x 0.64″ Includes:4 LR-4200-072 72MHz receivers1 LT-800-072 stationary RF transmitter1 universal antenna kit1 universal rack mounting kit4 ear speakers2 neckloop/lanyards1 4-port USB charger1 dual RCA to dual RCA 6.6 ft cable1 assistive listening notification signage kit