Use with hearing aids or cochlear implants equipped with a T-coil switch. 3.5 mm plug, mono, 8 - 16 Ω. Moderate to severe hearing loss. Safety Breakaway Feature Integrated safety breakaway device. In the event the neckloop cord becomes entangled with a object in motion, the breakaway device will disconnect the neckloop from the user. SPECIFICATIONS Integrated safety breakaway device 18" Cord - Adult size 3.5mm plug monoaural 8-16 ohm Recommended for DLR 360 Digi-wave receiver