This is a high grade, pro audio earphone designed for On Camera/On Stage professional use. Discretely listen to staff/guests while On Air/Live. This above Industry Standard Ear Prompter Kit comes with the standard Stereo 3.5mm straight connector with a screw-on 1/4” adapter. 60 Inch cable designed for news anchors or presenters using leg mounted IFB receivers. This universal kit offers: Ambidextrous Design, Iphone 3.5mm & Android Compatible, 1 x 1/4 Inch Screw On adapter, 60 Inch Cable Shielded Polyurethane Cable, Interchangeable Gold Plated Connectors, Customizable Hypoallergenic Ultra Clear Acoustic Tube, Customizable Ear Insert, 3 Sounds Isolation Ear Buds, Kevlar Lining for Added Tensile Strength, 30 Day Money Back Guarantee, 3 Year Free Replacement Warranty Compatible with: Lectrosonics, Clear-Com, Telex, Comrex, Comtek, Phonak, Studio Technologies, JK Audio, iPhone(3.5mm Headphone Jack), Android, SoundTap, Pro Intercom, Shure, Galaxy Audio, Glen Sound, Sennheiser, & More. Indoor & Outdoor In-Ear Cue Monitoring solution. Weather/Sweat Resistant. Specs: Impedance: 120 Ohm Rated Power: 0.3 Watt Sensitivity: 100dB Freq. Range: 100Hz-20KHz