Battery Longevity. Up to 40 hours of continuous audio streaming New Mobile device. The only new mobile device dedicated solely for assistive listening Large display. Large 6.8' full HD+ Infinity display ADA Compliant. Meets ADA hearing compliance for a dedicated assistive listening device Bluetooth-Enabled. Streams audio to Bluetooth-enabled headphones, speakers, and hearing aid telecoils when used with Williams AV neckloop Compatible with Williams AV Wi-Fi Transmitters. WaveCAST, WaveCAST C and WaveCAST 8, FM+ and FM+C, and IR+ transmitters